[kscreenlocker] [Bug 487337] fingerprint not unlocking

[Neal Becker]

https://bugs.kde.org/show_bug.cgi?id=487337

--- Comment #8 from Neal Becker  ---
On Thu, May 23, 2024 at 3:17 PM Nate Graham 
wrote:

> https://bugs.kde.org/show_bug.cgi?id=487337
>
> Nate Graham  changed:
>
>What|Removed |Added
>
> 
>  Status|NEEDSINFO   |RESOLVED
>  Resolution|WAITINGFORINFO  |DOWNSTREAM
>
> --- Comment #7 from Nate Graham  ---
> Thanks for testing that. It sounds like it, yes. At this point I would
> recommend following up with the Fedora folks to see which package might be
> missing or which files aren't installed, or something like that.
>
> It appears to be fixed after doing:
sudo authselect enable-feature with-fingerprint

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[kscreenlocker] [Bug 487337] fingerprint not unlocking

[Neal Becker]

https://bugs.kde.org/show_bug.cgi?id=487337

--- Comment #6 from Neal Becker  ---
I configured a new test user.  I enrolled a fingerprint using
system-settings/user.  Then I logged off/on for good measure.  Then I
locked the screen M-l.  There is no prompt for logging in with a
fingerprint, only with password.

Could I be missing some component?

On Thu, May 23, 2024 at 12:22 PM Nate Graham 
wrote:

> https://bugs.kde.org/show_bug.cgi?id=487337
>
> --- Comment #5 from Nate Graham  ---
> Thanks.
>
> Does it happen in a new clean user account if you set up fingerprint login
> there?
>
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[kscreenlocker] [Bug 487337] fingerprint not unlocking

[Neal Becker]

https://bugs.kde.org/show_bug.cgi?id=487337

--- Comment #4 from Neal Becker  ---
On Wed, May 22, 2024 at 4:51 PM Nate Graham 
wrote:

> https://bugs.kde.org/show_bug.cgi?id=487337
>
> --- Comment #3 from Nate Graham  ---
> Ok, thanks. And how exactly did you set up fingerprint authentication? On
> System Settings' users page, or another method?
>
> I used system settings/users.  I just re-enrolled a fingerprint and
rebooted.  Then after login, I locked the screen M-l, and there is no
prompt for fingerprint.  I rechecked that under system settings/users the
fingerprint is still shown as enrolled.

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[kscreenlocker] [Bug 487337] fingerprint not unlocking

[Neal Becker]

https://bugs.kde.org/show_bug.cgi?id=487337

--- Comment #2 from Neal Becker  ---
1.  There's no text below the password field that asks to swipe my finger.
Didn't know there was supposed to be.

On Wed, May 22, 2024 at 3:03 PM Nate Graham 
wrote:

> https://bugs.kde.org/show_bug.cgi?id=487337
>
> Nate Graham  changed:
>
>What|Removed |Added
>
> 
>  Status|REPORTED|NEEDSINFO
>  Resolution|--- |WAITINGFORINFO
>  CC||n...@kde.org
>
> --- Comment #1 from Nate Graham  ---
> Can you clarify what you mean by "I can't unlock with fingerprint." ?
>
> 1. There's no text below the password field that asks you to swipe your
> finger
> on the reader?
> 2. The text appears, but swiping your finger on the reader has no effect?
> 3. Swiping your finger has some effect, but it always says it couldn't read
> your fingerprint?
> 4. Something else?
>
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[kscreenlocker] [Bug 487337] New: fingerprint not unlocking

[Neal Becker]

https://bugs.kde.org/show_bug.cgi?id=487337

Bug ID: 487337
   Summary: fingerprint not unlocking
Classification: Plasma
   Product: kscreenlocker
   Version: 6.0.4
  Platform: Fedora RPMs
OS: Linux
Status: REPORTED
  Severity: normal
  Priority: NOR
 Component: general
  Assignee: plasma-b...@kde.org
  Reporter: ndbeck...@gmail.com
  Target Milestone: ---

***
If you're not sure this is actually a bug, instead post about it at
https://discuss.kde.org

If you're reporting a crash, attach a backtrace with debug symbols; see
https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports
***

SUMMARY

This is a fully updated F40 laptop, lenovo x1.  I've enrolled a fingerprint. 
But if I lock screen, I can't unlock with fingerprint.  Password works.

STEPS TO REPRODUCE
1. enroll fingerprint
2. lock screen Meta-L
3. try to unlock with fingerprint

OBSERVED RESULT

Only possibly relevant info from journal:
May 21 15:03:46 nbecker0 kscreenlocker_greet[83641]: kscreenlocker_greet:
Lockscreen QML outdated, falling back to default
May 21 15:03:50 nbecker0 wpa_supplicant[1461]: wlp0s20f3:
CTRL-EVENT-SIGNAL-CHANGE above=0 signal=-59 noise= txrate=29200
May 21 15:03:58 nbecker0 audit[83692]: USER_AUTH pid=83692 uid=1000 auid=1000
ses=3 subj=unconfined_u:unconfined_r:chkpwd_t:s0-s0:c0.c1023 >
May 21 15:03:58 nbecker0 kscreenlocker_greet[83641]: qt.qpa.wayland: Could not
create EGL surface (EGL error 0x3000)
May 21 15:03:58 nbecker0 kscreenlocker_greet[83641]: Failed to write to the
pipe: Bad file descriptor.

EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

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tunnelvision attack

[Neal Becker]

I'm assuming Fedora systems are vulnerable:

https://arstechnica.com/security/2024/05/novel-attack-against-virtually-all-vpn-apps-neuters-their-entire-purpose/

I hope we can find a fix soon!
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My nvidia F40 update journey

[Neal Becker]

Not as bad perhaps as some of your experiences, because I'm using nvidia
GPU for M/L on a remote server and not for desktop display.

After update the nvidia driver is not loaded.  Tried rebooting a couple of
times since sometimes akmod seems to need this.

Manually loading the driver
modprobe nvidia
I get an error message that there is no driver in /lib/modules,...

Finally I manually run
depmod -a

Then reboot again.
Now nvidia driver is loaded and nvidia-smi reports success.

My question is:
Why did I need to manually run depmod -a?
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[X2Go-User] x2go for wayland

[Neal Becker]

I'm curious if there will be something like x2go for wayland.  I've been 
playing with waypipe.  It does appear to at least work for allowing a remote 
application running on wayland to be used on my local machine.  Not sure if 
it performs as well on low-bandwidth connections as x2go using NX, but at 
least seems usable in some limited testing.

What's missing is persistent sessions and remote desktop.  While waypipe 
allows running a remote app, it doesn't AFAIK allow a remote desktop, nor 
persistence.

A bit of googling found nothing useful.  Anyone know if there is work in 
this area?

Thanks,
Neal

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pulseaudio misbehaviour on remote

[Neal Becker]

I'm running a connection to a remote server via x2go.  The remote desktop
is xfce.
When I leave this unattended for some time, I come back to find that
pulseaudio is sucking 64GB of VM.  Needless to say, I don't really need PA
running on it, but I haven't seen how to disable it.  Also this seems like
a bug, PA has no business using 64GB of VM.

I've just been killing it when I notice, but I'd rather fix the problem.

Any thoughts?
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If X11 login goes, what happens with x2go?

[Neal Becker]

I totally depend on x2go for connection to my remote server.  With f40,
what happens?  Is login to X11 desktop supported?  I assume this is
required for x2go to work.
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Re: Failed to start jobs message from today's F39 update

[Neal Becker]

On Tue, Mar 12, 2024 at 2:50 PM Joe Zeff  wrote:

> On 03/12/2024 12:33 PM, Neal Becker wrote:
> > Failed to start jobs: Failed to enqueue some jobs, see logs for details:
> > Invalid argument
> >
> > Should I worry?  I don't even know what armadillo is.
>
> Did you look at the logs and if not, why not?  Checking Wikipedia,
> armadillo is a C++ library for linear algebra.
>

I didn't search, because I don't know an easy way to do it.  Back when
syslog was text it was easy.
Let's try:
journalctl -g 'Failed to start jobs:'
...
Mar 13 07:17:37 nbecker0 packagekitd[723125]: Failed to start jobs: Failed
to enqueue some jobs, see logs for details: Invalid argument

OK, that still tells me nothing.  I need to see the lines before this, and
maybe after.  Any ideas?
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Failed to start jobs message from today's F39 update

[Neal Becker]

Running today's dnf update:
...
  Running scriptlet: grub2-common-1:2.06-118.fc39.noarch
 32/32
 Running scriptlet: armadillo-12.8.0-1.fc39.x86_64
  32/32
Failed to start jobs: Failed to enqueue some jobs, see logs for details:
Invalid argument

Should I worry?  I don't even know what armadillo is.
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Re: google-chrome-stable update fails today on gpg keys

[Neal Becker]

On Wed, Feb 14, 2024 at 9:17 AM Tom Horsley  wrote:

> On Wed, 14 Feb 2024 09:06:44 -0500
> Neal Becker wrote:
>
> > running /etc/cron.daily/google-chrome gives:
>
> I just ignore any gibberish it prints and do the update again,
> always seems to work for me.
> --
>

Thanks!  Rubbish ignored.  I took those messages as errors, seems they are
just noise.
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Re: google-chrome-stable update fails today on gpg keys

[Neal Becker]

On Wed, Feb 14, 2024 at 8:58 AM Tom Horsley  wrote:

> On Wed, 14 Feb 2024 07:46:15 -0500
> Neal Becker wrote:
>
> > The GPG keys listed for the "google-chrome" repository are already
> > installed but they are not correct for this package.
>
> After getting this many times, I finally figured out I need to
> manually run /etc/cron.daily/google-chrome to get new keys
> (the install from the google rpm sets this up, but doesn't
> always get run in time for the next update to work).
> --
>

running /etc/cron.daily/google-chrome gives:

warning: Certificate A040830F7FAC5991:
  Policy rejects subkey 4F30B6B4C07CB649: Policy rejected asymmetric
algorithm
warning: Certificate 7721F63BD38B4796:
  Subkey 1397BC53640DB551 is expired: The subkey is not live
  Subkey 78BD65473CB3BD13 is expired: The subkey is not live
  Subkey 6494C6D6997C215E is expired: The subkey is not live
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google-chrome-stable update fails today on gpg keys

[Neal Becker]

Today's dnf update fails with:

The GPG keys listed for the "google-chrome" repository are already
installed but they are not correct for this package.
Check that the correct key URLs are configured for this repository..
Failing package is: google-chrome-stable-121.0.6167.184-1.x86_64
 GPG Keys are configured as:
https://dl.google.com/linux/linux_signing_key.pub
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Patrick / coffeestains · GitLab

[Neal Becker]

https://framagit.org/Pathe/coffeestains
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[X2Go-User] x2go client on fedora 40 rc2

[Neal Becker]

I'm trying x2goclient from fedora 40 rc2 client to fedora 39 server.
Connection fails at startup "the remote proxy closed the connection during
negotiation" There should not be any authentication problem as I can ssh
without password.
The client then segfaults.

On the server side, in .x2go/
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#63.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#61.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#62 within 123
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#62.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#62.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 123
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 124
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 120
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#60 within 121
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#60 within 120
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#62.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! Failure reading from the peer proxy on FD#62.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#60 within 124
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 124
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 122
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#61 within 124
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#62 within 123
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#62 within 120
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#64 within 120
seconds.
Loop: Identified remote version '3.5.99'.
Loop: Remote compatibility version '3.5.0'.
Loop: Local version '3.5.99'.
Proxy: PANIC! No data received from remote proxy on FD#63 within 120
seconds.
Loop: 

Re: Latex vs. non-latex fonts

[Neal Becker]

On Sun, Jan 14, 2024 at 2:48 AM Herbert Voss 
wrote:

>
>
> Am 13.01.24 um 16:49 schrieb Neal Becker:
> > I have tried kpfonts.  Surprisingly, it also has the same problem with
> > authormark misplaced!
> >
>
> Looks like a bug with the IEEE layout of LyX. Export the test-document to
> LaTeX (pdflatex) and run it and it will be okay.
>
> Herbert
>


Looks like if I export to pdflatex and run pdflatex it works!
But if I export to lualatex and run lualatex the asterisks are misplaced.
Any idea of what is the cause?
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Re: Latex vs. non-latex fonts

[Neal Becker]

I have tried kpfonts.  Surprisingly, it also has the same problem with
authormark misplaced!


mwe-kpfonts.lyx
Description: application/lyx


mwe-kpfonts.pdf
Description: Adobe PDF document
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Re: Latex vs. non-latex fonts

[Neal Becker]

>
> I have
  No. Filename Symbolic namePath
   1.  cambria.ttc cambria   /usr/local/share/fonts/c/
   2.  cambria.ttc cambriamath   /usr/local/share/fonts/c/
   3. cambriab.ttf cambria  /usr/share/fonts/msttcore/
   4. cambriai.ttf cambria  /usr/share/fonts/msttcore/
   5. cambriaz.ttf cambria  /usr/share/fonts/msttcore/

Perhaps I am having some problem because I have cambria from 2 different
sources?  I grabbed the msttcore stuff, but that was missing cambriamath.
So then I found cambria.ttc which I manually installed, which has
cambriamath.
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Re: Latex vs. non-latex fonts

[Neal Becker]

Here is a mwe of the problem with Cambria (abstract is not bold).
I seem to have cambria-bold:
 luaotfload-tool -i --find="Cambria Bold"
luaotfload | resolve : Font "Cambria Bold" found!
luaotfload | resolve : Resolved file name
"/usr/share/fonts/msttcore/cambriab.ttf"


mwe-cambria.pdf
Description: Adobe PDF document


mwe-cambria.lyx
Description: application/lyx
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Re: Latex vs. non-latex fonts

[Neal Becker]

Here is a mwe of the New PX problem.


On Sat, Jan 13, 2024 at 9:33 AM Neal Becker  wrote:

>
>
> On Fri, Jan 12, 2024 at 3:15 PM Christopher Menzel 
> wrote:
>
>> On Jan 12, 2024, at 9:03 AM, Neal Becker  wrote:
>>
>> I'm writing another paper for IEEE conference.  I'm using lualatex to
>> produce pdf.
>>
>> In document/settings/fonts, I'm set to using all defaults. If I don't
>> check 'use non-TeX fonts', the output looks good. If I do check 'use
>> non-TeX fonts', the fonts look much thinner and to my eye not very
>> pleasing.  Again I have not changed any font settings from defaults.
>>
>>
>> And that’s why they don’t look good. You need to choose one from the
>> drop-down list. The problem with using non-TeX fonts is that there might
>> not be a corresponding math font. One that does have a math font and that
>> looks quite nice is Cambria. If you are using MacOS or Windows you should
>> have it on your machine if you’ve installed Office 365 or a standalone of
>> any of the usual Microsoft applications. To get the corresponding math font
>> once you’ve selected Cambria from the drop-down, add the following to the
>> preamble:
>>
>> \usepackage{unicode-math}
>> \setmathfont{Cambria Math}
>>
>> If you’re using Linux, there are instructions to be found on the
>> interwebs for installing the Microsoft fonts Cambria, Calibri, and
>> Consolas. They are extracted from the old PowerPoint Viewer, which
>> Microsoft released for free and hence (so I recall gathering from
>> discussions in various forums) can be extracted and used legally.
>>
>> Is there a recommended alternative set of fonts?
>>
>>
>> For TeX fonts, I really like New PX
>> <https://tug.org/FontCatalogue/newpx/>, a descendent of Palatino with a
>> very nice math font. Add the following to your preamble (and select
>> “Default” from the drop-down font list):
>>
>> \usepackage[T1]{fontenc}
>> \usepackage{newpxtext,newpxmath}
>>
>> Vastly superior aesthetically to the long outdated (but still, sadly,
>> oft-used) Computer Modern default.
>>
>> Chris Menzel
>>
>> I just tried out the New PX alternative.  It looks good except for one
> strange problem.  In the top of the paper is author name and authormark.
> Authormark (1 author) will be an asterisk.  With CM the asterisk is in the
> normal position, but with New PX the asterisk is about the middle of the
> text height, not in a superscript position.  Since this is right at the top
> of the paper and glaringly obvious I don't think I can use it.
>


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%% LyX 2.4.0~RC1 created this file.  For more info, see https://www.lyx.org/.
%% Do not edit unless you really know what you are doing.
\documentclass[american,conference]{IEEEtran}
\usepackage[T1]{fontenc}
\usepackage[utf8]{luainputenc}
\usepackage{geometry}
\geometry{verbose}

\makeatletter
%% User specified LaTeX commands.
%\pdfoptionpdfminorversion=7
%\usepackage{cite}
%\usepackage{hyperref}
%\usepackage{url}
\usepackage{flushend}
%\usepackage{unicode-math}
%\setmathfont{Cambria Math}
\usepackage[T1]{fontenc}
\usepackage{newpxtext,newpxmath}

\makeatother

\usepackage{babel}
\begin{document}
\title{A Very Interesting Title}
\author{\IEEEauthorblockN{Neal Becker\IEEEauthorrefmark{1}}\IEEEauthorblockA{Hughes Network Systems, Germantown MD\\
Email: \IEEEauthorrefmark{1}neal.bec...@hughes.com}}
\maketitle
\begin{abstract}
This abstract is very abstract
\end{abstract}


\section{Introduction}

Consider the topic introduced.
\end{document}


mwe.pdf
Description: Adobe PDF document
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Re: Latex vs. non-latex fonts

[Neal Becker]

On Fri, Jan 12, 2024 at 3:15 PM Christopher Menzel 
wrote:

> On Jan 12, 2024, at 9:03 AM, Neal Becker  wrote:
>
> I'm writing another paper for IEEE conference.  I'm using lualatex to
> produce pdf.
>
> In document/settings/fonts, I'm set to using all defaults. If I don't
> check 'use non-TeX fonts', the output looks good. If I do check 'use
> non-TeX fonts', the fonts look much thinner and to my eye not very
> pleasing.  Again I have not changed any font settings from defaults.
>
>
> And that’s why they don’t look good. You need to choose one from the
> drop-down list. The problem with using non-TeX fonts is that there might
> not be a corresponding math font. One that does have a math font and that
> looks quite nice is Cambria. If you are using MacOS or Windows you should
> have it on your machine if you’ve installed Office 365 or a standalone of
> any of the usual Microsoft applications. To get the corresponding math font
> once you’ve selected Cambria from the drop-down, add the following to the
> preamble:
>
> \usepackage{unicode-math}
> \setmathfont{Cambria Math}
>
> If you’re using Linux, there are instructions to be found on the interwebs
> for installing the Microsoft fonts Cambria, Calibri, and Consolas. They are
> extracted from the old PowerPoint Viewer, which Microsoft released for free
> and hence (so I recall gathering from discussions in various forums) can be
> extracted and used legally.
>
> Is there a recommended alternative set of fonts?
>
>
> For TeX fonts, I really like New PX <https://tug.org/FontCatalogue/newpx/>,
> a descendent of Palatino with a very nice math font. Add the following to
> your preamble (and select “Default” from the drop-down font list):
>
> \usepackage[T1]{fontenc}
> \usepackage{newpxtext,newpxmath}
>
> Vastly superior aesthetically to the long outdated (but still, sadly,
> oft-used) Computer Modern default.
>
> Chris Menzel
>
> I just tried out the New PX alternative.  It looks good except for one
strange problem.  In the top of the paper is author name and authormark.
Authormark (1 author) will be an asterisk.  With CM the asterisk is in the
normal position, but with New PX the asterisk is about the middle of the
text height, not in a superscript position.  Since this is right at the top
of the paper and glaringly obvious I don't think I can use it.
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Re: Latex vs. non-latex fonts

[Neal Becker]

On Fri, Jan 12, 2024 at 5:58 PM Christopher Menzel 
wrote:

> On Jan 12, 2024, at 3:25 PM, Neal Becker  wrote:
>
> On Fri, Jan 12, 2024 at 3:15 PM Christopher Menzel 
> wrote:
>
>> On Jan 12, 2024, at 9:03 AM, Neal Becker  wrote:
>>
>> I'm writing another paper for IEEE conference.  I'm using lualatex to
>> produce pdf.
>>
>> In document/settings/fonts, I'm set to using all defaults. If I don't
>> check 'use non-TeX fonts', the output looks good. If I do check 'use
>> non-TeX fonts', the fonts look much thinner and to my eye not very
>> pleasing.  Again I have not changed any font settings from defaults.
>>
>>
>> And that’s why they don’t look good. You need to choose one from the
>> drop-down list. The problem with using non-TeX fonts is that there might
>> not be a corresponding math font. One that does have a math font and that
>> looks quite nice is Cambria. If you are using MacOS or Windows you should
>> have it on your machine if you’ve installed Office 365 or a standalone of
>> any of the usual Microsoft applications. To get the corresponding math font
>> once you’ve selected Cambria from the drop-down, add the following to the
>> preamble:
>>
>> \usepackage{unicode-math}
>> \setmathfont{Cambria Math}
>>
>> If you’re using Linux, there are instructions to be found on the
>> interwebs for installing the Microsoft fonts Cambria, Calibri, and
>> Consolas. They are extracted from the old PowerPoint Viewer, which
>> Microsoft released for free and hence (so I recall gathering from
>> discussions in various forums) can be extracted and used legally.
>>
>> Thanks!  I am on linux (fedora).  I found instructions to install
> msfonts.  Now I have Cambria, but it seems not Cambria math?
>
> Package fontspec Error: The font "CambriaMath" cannot be found.
>
>
> Note there’s a space in the \setmathfont{Cambria Math} declaration, in
> case that’s relevant.
>
> Any hints?
> In /usr/share/fonts/mscorefonts I have
>   -r--r--r--. 1 root root 331916 Sep 26  2006 cambriab.ttf
>   -r--r--r--. 1 root root 336812 Aug  9  2006 cambriai.ttf
>   -r--r--r--. 1 root root 326024 Aug  9  2006 cambriaz.ttf
> (along with others not starting with 'cambrai’)
>
>
> Hm, here’s everything I’ve got on my Kali Linux installation:
>
> ╭─cmenzel@kali-linux-2022-2 ~
> ╰─$ locate cambria
> /usr/share/fonts/truetype/vista/cambria.ttf
> /usr/share/fonts/truetype/vista/cambriab.ttf
> /usr/share/fonts/truetype/vista/cambriai.ttf
> /usr/share/fonts/truetype/vista/cambriamath.ttf
> /usr/share/fonts/truetype/vista/cambriaz.ttf
> /usr/share/texmf/tex/context/fonts/mkiv/cambria-math.lfg
> /usr/share/texmf/tex/context/fonts/mkiv/cambria.lfg
> /usr/share/texmf/tex/context/fonts/mkiv/type-imp-cambria.mkiv
>
> In case you didn’t use the instructions I followed, give →THESE
> <https://kodejava.org/how-do-i-install-calibri-font-in-ubuntu/>← a try.
>
> -chris
>

Thanks, getting close.  Now compiles without error, but one thing strange.
The Abstract should be bold, but in Cambria it does not seem to be bold.
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Re: Latex vs. non-latex fonts

[Neal Becker]

On Fri, Jan 12, 2024 at 3:15 PM Christopher Menzel 
wrote:

> On Jan 12, 2024, at 9:03 AM, Neal Becker  wrote:
>
> I'm writing another paper for IEEE conference.  I'm using lualatex to
> produce pdf.
>
> In document/settings/fonts, I'm set to using all defaults. If I don't
> check 'use non-TeX fonts', the output looks good. If I do check 'use
> non-TeX fonts', the fonts look much thinner and to my eye not very
> pleasing.  Again I have not changed any font settings from defaults.
>
>
> And that’s why they don’t look good. You need to choose one from the
> drop-down list. The problem with using non-TeX fonts is that there might
> not be a corresponding math font. One that does have a math font and that
> looks quite nice is Cambria. If you are using MacOS or Windows you should
> have it on your machine if you’ve installed Office 365 or a standalone of
> any of the usual Microsoft applications. To get the corresponding math font
> once you’ve selected Cambria from the drop-down, add the following to the
> preamble:
>
> \usepackage{unicode-math}
> \setmathfont{Cambria Math}
>
> If you’re using Linux, there are instructions to be found on the interwebs
> for installing the Microsoft fonts Cambria, Calibri, and Consolas. They are
> extracted from the old PowerPoint Viewer, which Microsoft released for free
> and hence (so I recall gathering from discussions in various forums) can be
> extracted and used legally.
>
> Thanks!  I am on linux (fedora).  I found instructions to install
msfonts.  Now I have Cambria, but it seems not Cambria math?

Package fontspec Error: The font "CambriaMath" cannot be found.

Any hints?
In /usr/share/fonts/mscorefonts I have
  -r--r--r--. 1 root root 331916 Sep 26  2006 cambriab.ttf
  -r--r--r--. 1 root root 336812 Aug  9  2006 cambriai.ttf
  -r--r--r--. 1 root root 326024 Aug  9  2006 cambriaz.ttf
(along with others not starting with 'cambrai')

>
>
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Re: Latex vs. non-latex fonts

[Neal Becker]

On Fri, Jan 12, 2024 at 9:33 AM Eckhard Höffner 
wrote:

> Look at the document properties of the different pdf files. There is a
> section about the embedded fonts in the pdf. If you are using the
> regular Computer Modern (or LM); these fonts apear indeed very thin.
>
>
> Am 12.01.24 um 15:09 schrieb Neal Becker:
> > I'm writing another paper for IEEE conference.  I'm using lualatex to
> > produce pdf.
> >
> > In documen/settings/fonts, I'm set to using all defaults. If I don't
> > check 'use non-TeX fonts', the output looks good. If I do check 'use
> > non-TeX fonts', the fonts look much thinner and to my eye not very
> > pleasing.  Again I have not changed any font settings from defaults.
> >
> > Any thoughts or suggestions?  Oh, this is lyx-2.4.0beta5.
> >
> > Thanks,
> > Neal
> >
> --
> Eckhard Höffner
> Volkarstr. 64
> D-80636 München
>

Is there a recommended alternative set of fonts?
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Latex vs. non-latex fonts

[Neal Becker]

I'm writing another paper for IEEE conference.  I'm using lualatex to
produce pdf.

In documen/settings/fonts, I'm set to using all defaults.  If I don't check
'use non-TeX fonts', the output looks good.  If I do check 'use non-TeX
fonts', the fonts look much thinner and to my eye not very pleasing.  Again
I have not changed any font settings from defaults.

Any thoughts or suggestions?  Oh, this is lyx-2.4.0beta5.

Thanks,
Neal
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[Numpy-discussion] argmin of empty masked sequence not correctly handled (returns 0)

[Neal Becker]

argmin of an empty sequence throws an exception, which I think is a
good thing:
 np.argmin([])
---
ValueError

But not for a masked array:

n [24]: u = np.arange (10)

In [25]: v = np.ma.array (u, mask=np.ones(10))

In [26]: v
Out[26]:
masked_array(data=[--, --, --, --, --, --, --, --, --, --],
 mask=[ True,  True,  True,  True,  True,  True,  True,  True,
True,  True],
   fill_value=99,
dtype=int64)

In [28]: np.argmin(v)
Out[28]: 0

This is error prone and inconsistent.
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Re: Adding accented character in JabRef

[Neal Becker]

On Tue, Jan 2, 2024 at 5:29 AM Herbert Voss 
wrote:

>
>
> Am 02.01.24 um 11:20 schrieb Kees Zeelenberg:
> > Herbert Voss wrote:
> >> However, you should be able to insert directly ã
> > Isn't this only possible with either a keyboard that has the symbol
> directly or a keyboard with dead keys?
>
> sure ... but also
>
> Win: Alt+0227
> macOS: Alt+n a
> Linux: AltGr+a
>
>
> Or use your favorite unicode character app to insert, I use kcharselect
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Re: F40 Change Proposal: Optimized Binaries for the AMD64 Architecture (System-Wide)

[Neal Becker]

On Fri, Dec 29, 2023 at 6:43 AM Zbigniew Jędrzejewski-Szmek <
zbys...@in.waw.pl> wrote:

> On Thu, Dec 28, 2023 at 05:07:09PM +, Barry Scott wrote:
> >
> >
> > > On 28 Dec 2023, at 16:58, Chris Adams  wrote:
> > >
> > > Anything that depends on PATH entries is IMHO doomed to failure.
> > > There are way too many things that explicitly set PATH to "known"
> > > values (for good and bad reasons) to be able to depend on
> > > extending it. Heck, it took a long time to get sudo just to
> > > include /usr/local/{bin,sbin}.
>
> Things that reset $PATH to "known" values are usually breaking things
> and doing unnecessary work. It is OK to extend the $PATH by inserting
> something (usually at the front), but systemd sets it to something
> appropriate on a given system for _everything_ that is started, so
> resetting it is not useful.
>
> It was very common to set the $PATH via .bash_profile or other
> shell-specific mechanisms. This is flexible and convenient, but the
> problem with that approach is that it happens too late: since now the
> system may get all the way the graphical interface without going
> through a shell, if we want $PATH to be set properly for the whole
> environment including service binaries started directly by systemd,
> this needs to be done by systemd itself. And once it has done that,
> it's not helpful if the shell also plays with $PATH, affecting some
> processes but not others.
>
> But yeah, it's possible that sometimes we'll and up with an environment
> with $PATH without the additional directories. That's OK: it will
> gracefully fall back to the generic versions. Hopefully, people
> will fix those environments over time.
>
> (Sudo is a special case: it needs to reset the path to avoid being
> influenced by the calling environment. But things started through sudo
> are generally not CPU-intenstive, so using the generic versions should
> be OK.)
>
> > Indeed, how would my shell get the right micro architecture into its
> PATH?
> > Would konsole on plasma desktop picking up PATH from systemd?
>
> Yes. If should already be doing that.
>
> > The alternative would be to symlink the "right" version of a
> program/library from
> > the micro architecture dir into /usr/bin and /usr/lib maybe?
>
> The approaches with glibc-hwcaps and the proposed path-based thing for
> binaries
> have the advantage that they are dynamic. The same image can be used on
> different
> machines. It may even be read-only. In particular, in case of VMs, if we
> stop
> the VM, move it to a different host or change it's CPU settings, and
> restart it,
> it'll gracefully DTRT. It also important that the system remains functional
> even if a CPU downgrade happens for any reason.
>
> We _could_ take the approach with symlinks. Most likely, this would be
> handled
> via alternatives, i.e. the symlinks would go through /etc, i.e.
> /usr/bin/foo
> → /etc/alternatives/foo → /usr/lib-something/bin/foo. This is doable, but I
> like the dynamic approach much more.
>
> Also, glibc-hwcaps are implemented and available since glibc 2.33.
> Combining a static symlink-based system for binaries with a dynamic
> path-based system for libraries would be very strange.
>
> On a philosophical note, I once worked on Apollo workstations.  These
could switch behavior between sysv and bsd unix.  To do this, the kernel
would interpret e.g. /usr/bin/$arch, substituting the env variable arch.
At least that is my recollection of how this worked.  Elegant I think, but
some might see this as a security problem.
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[Numpy-discussion] Re: Change definition of complex sign (and use it in copysign)

[Neal Becker]

In my opinion, with the caveat that anyone that asks for the sign of a
complex number gets what they deserve, this seems about as useful a
definition as any.

On Fri, Dec 22, 2023 at 8:23 AM  wrote:

> Hi All,
>
> A long-standing, small wart in numpy has been that the definition of sign
> for complex numbers is really useless (`np.sign(z)` gives the sign of the
> real component, unless that is zero, in which case it gives the sign of the
> imaginary component, in both cases as a complex number with zero imaginary
> part). Useless enough, in fact, that in the Array API it is suggested [1]
> that sign should return `z / |z|` (a definition consistent with those of
> reals, giving the direction in the complex plane).
>
> The question then becomes what to do. My suggestion - see
> https://github.com/numpy/numpy/pull/25441 - is to adapt the Array API
> definition for numpy 2.0, with the logic that if we don't change it in 2.0,
> when will we?
>
> Implementing it, I found no real test failures except one for
> `np.geomspace`, where it turned out that to correct the failure, the new
> definition substantially simplified the implementation.
>
> Furthermore, with the redefinition, it has become possible to extend
> ``np.copysign(x1, x2)`` to complex numbers, since it can now generally
> return ``|x1| * sign(x2)`` with the sign as defined above (with no special
> treatment for zero).
>
> Anyway, to me the main question would be whether this would break any
> workflows (though it is hard to see how it could, given that the previous
> definition was really rather useless...).
>
> Thanks,
> https://github.com/data-apis/array-api/pull/556,
> Marten
>
> [1]
> https://data-apis.org/array-api/latest/API_specification/generated/array_api.sign.html
> (and https://github.com/data-apis/array-api/pull/556, which has links to
> previous discussion)
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Re: 6.6.x kernels do not boot successfully

[Neal Becker]

>
> At the boot menu, edit the grub command line and remove the "rghb quiet"
> from the end before booting.  Then see where it gets stuck.
>
Just to note, you don't need to edit command line, just hit esc while
booting will show messages.
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Re: printer only prints in flip mode

[Neal Becker]

I have a similar-sounding brother laserprinter.  I hate to say it, but I
found the available open-source driver didn't produce correct output with
mine, I had to use the proprietary driver from
brother: hll2395dwpdrv-4.0.0-1.i386.rpm

On Sun, Dec 3, 2023 at 4:03 PM Michael Hennebry <
henne...@web.cs.ndsu.nodak.edu> wrote:

> On Sat, 2 Dec 2023, George N. White III wrote:
>
> > On Sat, Dec 2, 2023 at 12:04?AM Michael Hennebry <
> > henne...@web.cs.ndsu.nodak.edu> wrote:
> >
> >> My Brother HL-L2360DW B laser printer
> >> is only printing in flip mode,
> >> i.e., when it prints 8.5x11 two-sided portrait,
> >> to read the back page, one must flip it vertically
> >> by a short side, rather that horizontally by a long edge.
> >>
> >
> > I think there have been changes to the PPD options for this.  How are you
> > connecting the
> > printer -- wifi or USB?
>
> USB
> When I first tried to install the printer,
> there was no option for this model.
>
> >> The defaults for the printer is set to
> >> job-sheets=none, none media=na_letter_8.5x11in sides=two-sided-long-edge
> >> I've restarted CUPS on F38.
> >> The problem occurs with both gedit and vim.
> >> In the case of gedit, page setup tells me I've set it up correctly,
> >> but it still does the wrong thing.
>
> > Is this a new install or was the printer working under Fedora in the
> past?
>
> In worked under F35.
>
> > That printer claims to support AirPrint, so should work with IPP
> > Everywhere, but there are
> > also legacy CUPS PPD files
>
> I have a separately downloaded brother-HLL2360D-cups-en.ppd from 2020.
> Apparently it did not work.
>
> With F35, I had to download and build some code, brlaser, to make it work.
> With F38, I am using package printer-driver-brlaser.x86_64 from updates.
> Said package apparently defined "Model"
> Brother HL-L2360D series, using brlaser v6 (en)  .
> The "Model" listed as current lacks the (en) .
>
> > See: 
> >
>
> > See: 
>
> Not seeing a lot info information on either site.
> The latter seems to link to the source that was rpm'ed to make
> printer-driver-brlaser.x86_64 .
> Despite the name, I do not see memtion of specific problems.
>
> I really hate the poke it and see what happens method of repair,
> but I might be reduced to it.
>
> --
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> "His longhand was fairly good in his youth, but as he got older it got
> smaller, more scribbly, and harder to read; although, like being hanged,
> one can get used to it." -- Gordon Dickson on H.P. Lovecraft's handwriting
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Re: Modern Dual-Boot Setup Prcoedure (Dell XPS)

[Neal Becker]

On Sun, Dec 3, 2023 at 7:00 AM George N. White III  wrote:

> On Sat, Dec 2, 2023 at 4:48 PM Tim Evans  wrote:
>
>> Brand New Dell XPS 15 coming tomorrow, to replace my venerable Lenovo
>> T530.  (Looking forward to something a little lighter to lug around.)
>>
>> It's been 10 years since I set the T530 up to dual-boot Fedora and
>> Windows.
>>
>> I'm sure I can figure out how to reduce the size of the Windows
>> partition to make space for Fedora, but am unsure of the process for
>> current PC BIOS and grub setup for dual boot. Or is the Fedora installer
>> smart enough to handle it for me?
>>
>> Are there docs for this?  Thanks.
>>
>
> You should check the LHWDB  for issues
> encountered by
> linux users (sometimes there are comments suggesting workarounds.
>
> You should use Windows tools to 1) update device firmware and 2) create
> "free space"
> for linux.  Dell has the "SupportAssist" app you should run immediately to
> update
> firmware and verify that everything works properly.   On my Dell I need to
> use F2 to
> get to the "BIOS" configuration, and "F12" to get a list of boot options.
> The problem is
> that the system starts faster than my monitor (using DP to HDMI adapter
> cable) wakes
> up so on cold boot I have to guess about the timing to hit a function
> key.  I usually end
> up in Windows a couple times before I get into the BIOS screen I want.
>
> The Windows tools have changed with recent updates to Windows 11
> as I discovered when installing F39 on a Dell desktop.  I just converted
> an existing linux partition to free space so didn't need to shrink the
> Windows
> partition.  A common mistake is allowing Windows assign a drive letter to
> the free space -- the Fedora installer looks for "free space".
>
> About 1 yr back I installed fedora onto my wife's dell laptop with windows
10 for dual boot.  Despite significant and lengthy efforts to follow online
guides to get windows to free up space I never got that to work - windows
never gave up the space.  In the end installed into a spare 2G partition
instead.
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pdf version error with lyx-2.4devel

[Neal Becker]

Trying to run lualatex.  An included graphic was produced by pdfcrop
 pdfcrop --version
pdfcrop 2020/06/06 v1.40

I get no pdf file, I think the problem comes from this:

warning (file
export_autoencoder_sspa_2sps_3_32apsk_linear_co___73b4b4c71ce2ff5

bbf283ce565b0b314f893e8bc937.pdf) (pdf inclusion): PDF inclusion: found PDF
vers

ion '1.7', but at most version '1.5' allowed


Any ideas?
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Re: numeric bibliography reference, biblatex, ieee

[Neal Becker]

Thanks.  1st I found that if I choose biblatex natbib mode then numeric
does work.  As you mentioned I also found I needed biblatex-ieee package
and select ieee option for bibliography.

Now it works, but as I found previously, the bibliography thus formatted
doesn't look like the ieee formatting produced by the old bibtex mode.  The
older one produces entries that are more visually compact.  Not sure if
using different font and/or size.

On Tue, Nov 21, 2023 at 3:52 PM Axel Dessecker  wrote:

> Am Montag, 20. November 2023, 17:41:03 CET schrieb Neal Becker:
> > I just started a new paper in ieee style and selected biblatex for
> > bibliography.  I know I will probably have to change that because last
> time
> > I used biblatex with ieee the resulting bibliography was too large -
> using
> > bibtex produced better results, but that's not my question.
> >
> > I need to get numeric references in the text (e.g., [1]), but that
> doesn't
> > seem to be a choice.  Even though in document/settings/bibliography I've
> > selected numeric, that's not an option for "citation style" when I click
> on
> > the citation.  I've attached 2 pics to illustrate.
> >
> > Any ideas?
>
> Neal,
>
> Have you thought about installing the biblatex-ieee package? This is also
> part
> of texlive.
>
> Axel
>
>
>
>
>
>

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Re: Python code error in F39, but not in F38

[Neal Becker]

Start gdb python.  Set a breakpoint in the shared module.  continue.

On Sun, Nov 19, 2023 at 1:02 PM Ranjan Maitra via users <
users@lists.fedoraproject.org> wrote:

> On Sun Nov19'23 05:35:19PM, Barry wrote:
> > From: Barry 
> > Date: Sun, 19 Nov 2023 17:35:19 +
> > To: Community support for Fedora users 
>  >
> > >
> > >
> > > It is possible that there is a bug in the code itself, but nothing
> above
> > > points to my created code.
> > >
> > > Any suggestions? Or is this a bug?
> >
> > Are you using C extensions in your code? If so I would suspect them for
> corrupting python. I think you can get into gdb inside the core file with
> coredumpctl debug.
>
> The python code calls a shared object library that is written in C. But
> why does this core dump only happen in F39 (python 3.12) and not with
> F38 (python 3.11)?
>
> > What does “info shared” tell you about what code has been loaded into
> memory?
>
> This would be under gdb, I presume.
>
>
> > It is also worth trying to find the type of the object that is being
> deleted, _PyObject_Free will have pointer to the object.
> > Also not sure where siplib.c is from is it python or an extension?
>
> Thanks, I don't know either, but there is no siplib.c anywhere on either
> of my two systems.
>
> > I am assuming here that you are familiar with debugging with gdb.
>
> Thanks, I am familiar with using gdb for a C program, never used it with
> python code calling a C shared object.
>
> I tried:
>
> $ gdb python "./test.py ultadanga.tiff ultadanga-64-rgb.png 1 7"
> GNU gdb (Fedora Linux) 13.2-10.fc39
> Copyright (C) 2023 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later <
> http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.
> Type "show copying" and "show warranty" for details.
> This GDB was configured as "x86_64-redhat-linux-gnu".
> Type "show configuration" for configuration details.
> For bug reporting instructions, please see:
> .
> Find the GDB manual and other documentation resources online at:
> .
>
> For help, type "help".
> Type "apropos word" to search for commands related to "word"...
> Reading symbols from python...
>
> This GDB supports auto-downloading debuginfo from the following URLs:
>   
> Enable debuginfod for this session? (y or [n]) y
> Debuginfod has been enabled.
> To make this setting permanent, add 'set debuginfod enabled on' to
> .gdbinit.
> Reading symbols from
> /home/localuser/.cache/debuginfod_client/07023eb4f297ae1d4591e--Type 
> for more, q to quit, c to continue without paging--
> c808ab20b2788c542be/debuginfo...
> ./test.py ultadanga.tiff ultadanga-64-rgb.png 1 7: No such file or
> directory.
> (gdb)
>
>
> Not quite sure how to proceed here.
>
> Many thanks again, and best wishes,
> Ranjan
>
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upgrade f38->f39 via discover?

[Neal Becker]

I've always upgraded manually using dnf system-upgrade. I have a laptop
running F38 belonging to my wife.  She got a notification, I presume from
"discover", saying F39 upgrade is available.  I've never tried an upgrade
this way.  Just wondering if anyone has tried this upgrade route and what
was their experience?
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Re: emacs is hopeless

[Neal Becker]

On Sun, Nov 12, 2023 at 12:17 PM Tom Horsley  wrote:

> I reported strange things with emacs earlier, but I thought it might be
> something wrong with my partially configured system.
>
> Nope, it is just plain busted. I've added this bug report:
>
> https://bugzilla.redhat.com/show_bug.cgi?id=2249379
>
> I guess I'll have to try building from the fedora 38 source rpm
> on fedora 39 and see if I can get a working emacs that way.
>

It emacs all day every day here, same as the last 30? years.

I'm using [copr:copr.fedorainfracloud.org:bhavin192:emacs-pretest] on 1
machine, although the stock emacs on another machine is working also.
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Re: Is AnyDesk any good?

[Neal Becker]

On Thu, Nov 9, 2023 at 3:22 PM Samuel Sieb  wrote:

> On 11/9/23 03:31, ToddAndMargo via users wrote:
> > On 11/8/23 22:55, Samuel Sieb wrote:
> >> On 11/8/23 22:44, Peter Boy wrote:
>  I use the open-source rustdesk now.  I even use my own server for
>  it, but at this point, that requires the client to change that
> setting.
> >>>
> >>> Interesting, didn’t know that and will check it out. Does your
> >>> rustdesk server is running on Fedora?
> >>
> >> Yes, I'm running the discovery and relay servers on my Fedora server.
> >
> > Any third party selling time on their rust server?
>
> The people that make it: https://rustdesk.com/pricing.html


I have a similar problem.  My wife's mother is developing dementia.  We got
her a chromebook.  We would like to be able to remotely manage it for her,
but we need a solution that does not require her to take any action.
chrome remote desktop would not be an option because she would not be able
to understand the instructions to use it.

Any ideas?
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[Numpy-discussion] Re: Function that searches arrays for the first element that satisfies a condition

[Neal Becker]

Thanks Juan, this is really great!  I plan to make use of this right away.

On Wed, Nov 1, 2023 at 8:13 AM Juan Nunez-Iglesias  wrote:

> Have you tried timing things? Thankfully this is easy to test because the
> Python source of numba-jitted functions is available at jitted_func.py_func.
>
> In [23]: @numba.njit
> ...: def _first(arr, pred):
> ...: for i, elem in enumerate(arr):
> ...: if pred(elem):
> ...: return i
> ...:
> ...: def first(arr, pred):
> ...: _pred = numba.njit(pred)
> ...: return _first(arr, _pred)
> ...:
>
> In [24]: arr = np.random.random(100_000_000)
>
> In [25]: %timeit first(arr, lambda x: x > 5)
> 72 ms ± 1.36 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
>
> In [26]: %timeit arr + 5
> 90.3 ms ± 762 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)
>
> In [27]: %timeit _first.py_func(arr, lambda x: x > 5)
> 7.8 s ± 46.2 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
>
> So numba gives a >100x speedup. It's still not as fast as a NumPy function
> call that doesn't have an allocation overhead:
>
> In [30]: arr2 = np.empty_like(arr, dtype=bool)
>
> In [32]: %timeit np.greater(arr, 5, out=arr2)
> 13.9 ms ± 69.6 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)
>
> But it's certainly much better than pure Python! And it's not a huge cost
> for the flexibility.
>
> Juan.
>
> On Wed, 1 Nov 2023, at 10:42 AM, Dom Grigonis wrote:
>
> This results in a very slow code. The function calls of
>
> _pred = numba.njit(pred)
>
> are expensive and this sort of approach will be comparable to pure python
> functions.
>
> This is only recommended for sourcing functions that are not called
> frequently, but rather have a large computational content within them. In
> other words not suitable for predicates.
>
> Regards,
> DG
>
> On 1 Nov 2023, at 01:05, Juan Nunez-Iglesias  wrote:
>
> If you add a layer of indirection with Numba you can get a *very* nice API:
>
> @numba.njit
> def _first(arr, pred):
> for i, elem in enumerate(arr):
> if pred(elem):
> return i
>
> def first(arr, pred):
> _pred = numba.njit(pred)
> return _first(arr, _pred)
>
> This even works with lambdas! (TIL, thanks Numba devs!)
>
> >>> first(np.random.random(10_000_000), lambda x: x > 0.99)
> 215
>
> Since Numba has ufunc support I don't suppose it would be hard to make it
> work with an axis= argument, but I've never played with that API myself.
>
> On Tue, 31 Oct 2023, at 6:49 PM, Lev Maximov wrote:
>
> I've implemented such functions in Cython and packaged them into a library
> called numpy_illustrated 
>
> It exposes the following functions:
>
> find(a, v)  # returns the index of the first occurrence of v in a
> first_above(a, v)   # returns the index of the first element in a that is
> strictly above v
> first_nonzero(a)   # returns the index of the first nonzero element
>
> They scan the array and bail out immediately once the match is found. Have
> a significant performance gain if the element to be
> found is closer to the beginning of the array. Have roughly the same speed
> as alternative methods if the value is missing.
>
> The complete signatures of the functions look like this:
>
> find(a, v, rtol=1e-05, atol=1e-08, sorted=False, default=-1, raises=False)
> first_above(a, v, sorted=False, missing=-1, raises=False)
> first_nonzero(a, missing=-1, raises=False)
>
> This covers the most common use cases and does not accept Python callbacks
> because accepting them would nullify any speed gain
> one would expect from such a function. A Python callback can be
> implemented with Numba, but anyone who can write the callback
> in Numba has no need for a library that wraps it into a dedicated function.
>
> The library has a 100% test coverage. Code style 'black'. It should be
> easy to add functions like 'first_below' if necessary.
>
> A more detailed description of these functions can be found here
> 
> .
>
> Best regards,
>   Lev Maximov
>
> On Tue, Oct 31, 2023 at 3:50 AM Dom Grigonis 
> wrote:
>
> I juggled a bit and found pretty nice solution using numba. Which is
> probably not very robust, but proves that such thing can be optimised while
> retaining flexibility. Check if it works for your use cases and let me know
> if anything fails or if it is slow compared to what you used.
>
>
> first_true_str = """def first_true(arr, n):result = np.full((n, 
> arr.shape[1]), -1, dtype=np.int32)for j in range(arr.shape[1]):k 
> = 0for i in range(arr.shape[0]):x = arr[i:i + 1, j]   
>  if cond(x):result[k, j] = ik += 1
> if k >= n:breakreturn result"""
>
> *class* *FirstTrue*:
> CONTEXT = {'np': np}
>
> *def* __init__(self, expr):
>  

[X2Go-Dev] x2gokdrive freezing

[Neal Becker]

I've been testing x2gokdrive on fedora 38 (client and server).  It's 
generally working, but I just got a freeze that is not recoverable.  That 
is, the session has gotten into a state so that when I try to reconnect, it 
only starts to open the display and hangs.  The display is set for full 
screen.  When reconnecting, I first will see a black window, then the window 
will become full size and display normally.  In this stuck state, I only see 
a small all black window.

Here is the log of attempt to reconnect:
MAIN:x2gokdriveremote.c:142,remote_handle_signal() GOT SIGNAL 1
MAIN:x2gokdriveremote.c:3340,processConfigFileSetting() Using JPEG 
Compression
MAIN:x2gokdriveremote.c:3346,processConfigFileSetting() JPEG quality 99 is 
requested, x2gokdrive will override it to 70
MAIN:x2gokdriveremote.c:3350,processConfigFileSetting() Image quality: 70
MAIN:x2gokdriveremote.c:3357,processConfigFileSetting() accept localhost
MAIN:x2gokdriveremote.c:3367,processConfigFileSetting() listen 52837
MAIN:x2gokdriveremote.c:3389,processConfigFileSetting() CLIPBOARD MODE: both
MAIN:x2gokdriveremote.c:3325,processConfigFileSetting() state file 
/tmp/.x2go-nbecker/C-nbecker-50-1698764366_stKstartplasma-x11_dp24/state
MAIN:x2gokdriveremote.c:2142,setAgentState() Agent state RESUMING
MAIN:x2gokdriveremote.c:3227,open_socket() Openning TCP socket...
MAIN:x2gokdriveremote.c:3237,open_socket() Accepting connections from 
localhost
MAIN:x2gokdriveremote.c:3242,open_socket() Listen on port 52837
MAIN:x2gokdriveremote.c:3256,open_socket() Set notify FD for server sock: 59
MAIN:x2gokdriveremote.c:3257,open_socket() waiting for Client connection

MAIN:x2gokdriveremote.c:3261,open_socket() Server TCP socket is ready
MAIN:x2gokdriveremote.c:3030,serverAcceptNotify() Connection from 
(127.0.0.1)...

MAIN:x2gokdriveremote.c:3124,close_server_socket() Remove notify FD for 
server sock 59
MAIN:x2gokdriveremote.c:3075,serverAcceptNotify() got 32 COOKIE BYTES from 
client
MAIN:x2gokdriveremote.c:3082,serverAcceptNotify() Cookie approved
MAIN:x2gokdriveremote.c:3091,serverAcceptNotify() Set notify FD for client 
sock: 60
MAIN:x2gokdriveremote.c:2142,setAgentState() Agent state RUNNING

The only thing I can do is close the window at this point.  

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Re: Printer drivers and raw queues are deprecated

[Neal Becker]

On Tue, Oct 31, 2023 at 2:53 PM Ian Pilcher  wrote:

> On 10/31/23 11:10, Patrick O'Callaghan wrote:
> > The theory is that you shouldn't have to do anything except configure
> > the printer (in CUPS) to use DNSSD. That in turn depends on Avahi
> > working correctly. Try 'sudo avahi-browse -a -t' to make sure the
> > printer is visible.
>
> I just set up an Epson EcoTank inkjet printer.  Theoretically, it
> supports IPP Everywhere, AirPrint, and driverless printing, but it only
> accepts ESC/P-R datastreams, so color me skeptical about the wonderful
> driverless future.
>
Driverless sounds like a nice concept, but doesn't seem to work for me.  I
deleted the proprietary printer driver for my brother laser hl-l2395dw,
then on KDE try adding a printer.  It does detect the printer in the
"discovered printers" section I see a hll2395dw "driverless" option.  But
if I choose that, I'm prompted to fill in an ip address and some other info
(port?).  So I don't think this is actually working.  Choosing instead
Brother's proprietary driver works and connects via dnssd without asking me
for other info.
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Re: Printer drivers and raw queues are deprecated

[Neal Becker]

On Mon, Oct 30, 2023 at 1:47 PM Michael Hennebry <
henne...@web.cs.ndsu.nodak.edu> wrote:

> CUPS wrote:
> > Note:Printer drivers and raw queues are deprecated and will stop working
> in a
> future version of CUPS.
>
> Then what?
> It wrote that after I installed a Brother HL-L2360DW
> using the printer-driver-brlaser-6.2.6-1.fc38.x86_64 package.
> It provided the
> Brother HL-L2360D series, using brlaser v6 (en)
> option under model.
>
> If CUPS rejects my printer before it runs out of ink,
> will I have another option?
>
> I used  hll2395dwpdrv-4.0.0-1.i386.rpm from Brother downloads.
-
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Re: [X2Go-User] Trying x2gokdrive again

[Neal Becker]

Neal Becker wrote:

> I'm trying out Orion's packages of kdrive on F38
> 
> client:
> x2goclient-4.1.2.3-1.fc38.x86_64
> x2gokdriveclient-0.0.0.1-2.fc38.x86_64
> 
> server:
> x2goserver-common-4.1.0.4-1.fc38.noarch
> x2goagent-4.1.0.4-1.fc38.x86_64
> x2goserver-xsession-4.1.0.4-1.fc38.noarch
> x2goserver-4.1.0.4-1.fc38.x86_64
> x2goserver-x2gokdrive-4.1.0.4-1.fc38.x86_64
> 
> Running kde on both client and server, so far working well.
> One bug:
> The command to start kde is no longer startkde, it's startplasma-x11.
> 

So far good results!  The previous tests failed because when the network 
connection was lost the session was lost, which made it unusable for my use 
case.  Now this problem seems fixed.  When network connection is lost, the 
client crashes, which is annoying, but not does not make it unusable.  The 
session is preserved and restarting the client reconnects fine.

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[X2Go-User] Trying x2gokdrive again

[Neal Becker]

I'm trying out Orion's packages of kdrive on F38

client:
x2goclient-4.1.2.3-1.fc38.x86_64
x2gokdriveclient-0.0.0.1-2.fc38.x86_64

server:
x2goserver-common-4.1.0.4-1.fc38.noarch
x2goagent-4.1.0.4-1.fc38.x86_64
x2goserver-xsession-4.1.0.4-1.fc38.noarch
x2goserver-4.1.0.4-1.fc38.x86_64
x2goserver-x2gokdrive-4.1.0.4-1.fc38.x86_64

Running kde on both client and server, so far working well.
One bug:
The command to start kde is no longer startkde, it's startplasma-x11.

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Re: Google Chrome Update Question

[Neal Becker]

On Tue, Oct 10, 2023 at 7:46 PM Tim Evans  wrote:

> On 10/10/23 18:38, Tim Evans wrote:
> > Usually, dnf updates take care of updating Google Chrome.  Lately, for
> > the past week or so, however, there's a big pink button in Chrome's
> > status bar labeled "Update," but dnf insists I have the latest version
> > (google-chrome-stable-115.0.5790.110-1.x86_64).
> >
> > If you click this button, it tells you it's unable to update Chrome and
> > asks if you want to re-install.
> >
> > Is this just a new idiot light that means nothing, or is there some sort
> > of conflict with update versions?
>
> OK, for whatever unknown reason, /etc/yum.repos.d/google-chrome.repo had
> the 'enabled' flag set to 0.  Setting it to 1 allowed dnf to update
> Chrome to version 118.0.5993.70--and the pink button is gone.
>
> I see the same thing on another similarly behaving system, with the mod
> date on the file as July 26. There is an 'rpmnew' version of that file
> (dated 2/3/2022) with the same flag set to 0, but with another line that
> says "skip_if_unavailable=True" This line is not present in the
> currently used file.
>

Also, don't forget that you have to restart chrome after updating or you'll
continue to see the notification.
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distrobox not working?

[Neal Becker]

Just trying out distrobox on F38.  I have 2 issues.  One is it won't run a
container without root.  The other is I don't think it's actually working
at all.

 distrobox enter ubuntu-20
Container ubuntu-20 is not running.
Starting container ubuntu-20
run this command to follow along:

 podman logs -f ubuntu-20

Error: OCI runtime error: unable to start container
"46a0c000c02583c2d4c4fb1e329de7a0f1daddc1d4bc812e7d0e409a2a353a8b": crun:
error `creating` systemd unit
`libpod-46a0c000c02583c2d4c4fb1e329de7a0f1daddc1d4bc812e7d0e409a2a353a8b.scope`:
got `failed`

Now try with --root
[nbecker@ubuntu-20 ~]$ apt-get
bash: apt-get: command not found

OK, is this really a container running ubuntu?  Doesn't seem to be, there's
no apt-get.

Any ideas?

Thanks,
Neal
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Re: F40 Change Proposal: KDE Plasma 6 (System Wide)

[Neal Becker]

On Tue, Sep 19, 2023 at 10:12 AM Neal Gompa  wrote:

> On Tue, Sep 19, 2023 at 9:57 AM Neal Becker  wrote:
> >
> > Some apps that are not open source and we are required to use don't
> cooperate:  see attached
> >
>
> According to this VMware forum post, the warning is annoying, but
> harmless?
> https://communities.vmware.com/t5/Horizon-for-Linux/Anyone-know-if-they-re-working-on-Wayland-support-for-the/td-p/2953800
>
> Thanks!  That does work.
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Re: F40 Change Proposal: KDE Plasma 6 (System Wide)

[Neal Becker]

Some apps that are not open source and we are required to use don't
cooperate:  see attached

On Mon, Sep 18, 2023 at 11:58 AM Steven A. Falco 
wrote:

> On 9/18/23 11:33 AM, Neal Gompa wrote:
> > On Mon, Sep 18, 2023 at 11:12 AM Steven A. Falco 
> wrote:
> >>
> >> On 9/17/23 05:48 PM, Kevin Kofler via devel wrote:
> >>> Ian Laurie wrote:
>  I didn't think the greeter used Wayland?  So there may be something
> else
>  going on.  I cannot swear to it, but I don't think I've noticed
> problems
>  in the greeter before.
> 
>  As Adam posted, the offset problem already has a bug for it.  Wayland
> is
>  certainly unusable in VirtualBox, but now even the greeter has issues,
>  and I think that's newish.
> >>>
> >>> SDDM was switched to Wayland for F38 and newer. If you want it to use
> X11,
> >>> you have to edit /etc/sddm.conf and set:
> >>>
> >>> [General]
> >>> DisplayServer=x11
> >>>
> >>> there.
> >>>
> >>>   Kevin Kofler
> >>
> >> Yes - I had to do that because the Wayland version of the SDDM greeter
> apparently doesn't honor xrandr.
> >>
> >> I have the following in my /etc/sddm/Xsetup file:
> >>
> >>  #!/usr/bin/sh
> >>  # Xsetup - run as root before the login dialog appears
> >>  xrandr --output DisplayPort-0 --right-of DisplayPort-1
> >>
> >> If I have the greeter set to x11 that works perfectly, but if I have
> the greeter set to wayland it is ignored.
> >>
> >> I don't know if there is a way to tell wayland the desired screen
> arrangement.  If there is a way I'd like to hear about it.  If there isn't
> a way, then I guess that should be another bug.
> >>
> >
> > kwin can be configured using kscreen-doctor, as long as the kwin
> > wayland socket is up.
>
> Thanks, Neal.  I'll give that a try at some point.
>
> Steve
>
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Re: How to clean up Python in Fedora 38

[Neal Becker]

On Tue, Sep 5, 2023 at 8:09 PM George N. White III  wrote:

> On Tue, Sep 5, 2023 at 5:55 AM Michael Hannon 
> wrote:
>
>> I think that the suggestions offered so far (environments, etc.) are all
>> very good, but another approach is to use the Anaconda distribution of
>> Python:
>>
>> https://www.anaconda.com/
>>
>> I use this distribution precisely to avoid any mixups with the Python
>> files that come with the OS distribution.  Note that the use of the
>> Anaconda version of Python doesn't preclude the use of pip, Python
>> environments, etc.
>>
>
> Another advantage is that Anaconda provides consistency across multiple
> linux distros, macOS, and Windows.
>
>
And a disadvantage to anaconda from my view is it's package management is
hard to navigate and poorly documented, at least in the limited time I
spent trying to grok it.  Maybe mamba will improve things.
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Re: GNU Emacs 29.1 in the repos?

[Neal Becker]

On Mon, Aug 21, 2023 at 7:35 PM Jonathan Billings 
wrote:

> On Aug 21, 2023, at 11:44, Gábor Papp  wrote:
>
> Good morning/afternoon/evening/night!
>
> I was just wondering when will Emacs 29.1 be available in the Fedora 38
> repos?
>
>
> Looks like it has only been built for Fedora 39 at this point.
>
> https://bodhi.fedoraproject.org/updates/FEDORA-2023-07e6003761
>
>
https://download.copr.fedorainfracloud.org/results/bhavin192/emacs-pretest/
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Re: window sharing broken with current F38+kde+wayland

[Neal Becker]

On Fri, Aug 18, 2023 at 11:13 AM Neal Becker  wrote:

> For online meetings I have always used share window (as opposed to sharing
> a chrome tab or entire screen).  Recently this has been broken.
>
> Using current F38+kde+wayland.
> Tested on teams and on google meet (same interface, must be part of KDE I
> think).
> If I select a window to share the tab for that window on the task manager
> disappears, which gives me no way to move my cursor to that window and do
> the presentation.
>
> I find share a screen still works fine, and I guess I'll have to use that
> for now.
>
> Seems some recent change.  Along with it also there is a change to the way
> the dialog for sharing appears, and for some reason you need to go through
> 2 different dialogs the confirm sharing 2 times.  This again is a recent
> change.
>
> Any ideas?
>
> After playing around some more I have some new observations:
1. logout/login seems to have cleared the problem.  The window I wanted to
share no longer has it's tab disappear making it impossible to select.
2. The strangeness of needing to go through 2 sharing dialogs is
kde/wayland.  If I use kde/X11 it still behaves the same as it did in the
past, and works fine.
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Re: beamer usability

[Neal Becker]

If I change my workflow it does, I need to only copy/paste the frame
contents (not the entire frame).  So insert separated frame and then paste
in the contents does seem to work.  This is probably much better than what
I was doing.  Thanks!

On Fri, Aug 18, 2023 at 11:21 AM Scott Kostyshak  wrote:

> On Fri, Aug 18, 2023 at 10:59:20AM -0400, Neal Becker wrote:
> > On Fri, Aug 18, 2023 at 10:13 AM Scott Kostyshak 
> wrote:
> >
> > > On Fri, Aug 18, 2023 at 07:49:45AM -0400, Neal Becker wrote:
> > > > I've been using LyX for quite a while and beamer for even quite a
> while
> > > > longer, but my knowledge of LyX is fairly superficial.
> > > >
> > > > I frequently produce slides which incorporate a graph on the left
> with
> > > > bulleted text on the right.  An example LaTeX code is below.  I do
> need
> > > to
> > > > use ERT for the minipage.  The reason for the minipage is to shrink
> the
> > > > text on the left.  I cut/paste LaTeX here because pasting LyX doesn't
> > > seem
> > > > to include the ERT.
> > > >
> > > > Since this structure is a bit tedious to enter I usually prefer to
> > > > copy/paste the frame, changing the text and the figure but keeping
> the
> > > > structure.
> > > >
> > > > This copy/pasting is a bit more difficult than I would hope.
> Firstly, to
> > > > successfully copy/paste a beamer frame it is best to make sure there
> is a
> > > > frame separator.  Position the cursor just at the end of this frame
> > > > separator before the frame you wish to copy, then select down to the
> end
> > > of
> > > > the frame.
> > > >
> > > > When pasting, it seems best to position cursor just after a frame
> > > > separator.  If this is not done (frame separators not used) I
> frequently
> > > > wind up with a frame title outside of a frame, a situation that seems
> > > > difficult to recover from (although at least 1 time I did fix it by
> > > > positioning the cursor near the start of the frame title and
> selecting
> > > > "frame").
> > > >
> > > > Assuming I've placed the cursor at the end of the graphic of the
> frame
> > > I'd
> > > > like to copy, the procedure to get frame separator inserted seems
> > > tedious.
> > > > 1.  Hit enter.  Now I'm in "columns"
> > > > 2. Hit dedent.  Now I'm still in "columns" but outside the frame
> > > > 3. Change to "standard" . For some reason, this moves cursor back
> inside
> > > > frame
> > > > 4. Hit dedent again.  Now finally I can hit enter to produce the
> frame
> > > > separator.
> > > >
> > > > Is there an easier way?
> > > >
> > > > Thanks,
> > > > Neal
> > >
> > > For your specific question, does this thread help you out?
> > >
> > >   https://www.mail-archive.com/lyx-users@lists.lyx.org/msg104013.html
> > >
> > > Basically, if you figure out a command sequence that does what you want
> > > then you can bind it to a shortcut. I know this isn't out-of-the-box
> > > user-friendly, but perhaps it helps your use case.
> > >
> > > More generally, I've also found similar workflows to be unexpectedly
> > > complicated. I think that LyX's beamer workflow needs some
> improvements.
> > > Thankfully, LyX's beamer support was hugely improved several years ago.
> > > Before then, from what I understand it was a bunch of Beamer-specific
> hacks
> > > cobbled together; now it is just a well-defined special case of a
> document
> > > class. So I think the hard work is done, and all the required
> functionality
> > > is there, we just need to improve the interface/workflow.
> > >
> > > I have some ideas, based on sporadic discussions on the list. But I
> have
> > > no time to work on the code, and I do not want to start long
> conversations
> > > unless there is a volunteer willing to work on the code. Anyone who
> would
> > > be interested in working on the code, let me know and I will put the
> time
> > > into organizing my thoughts.
> > >
> > > In the meantime, I think it would be helpful to collect several use
> cases
> > > that are unexpected complicated, like the one that you bring up.
> > >
> > > Thanks.  I've never learned about key bindings or command sequences,
> maybe
> > it's time to learn about that.
> > Since insert frame separator is no longer on the menu it seems my
> procedure
> > has become more complex.
> > I looked at the email thread.  First thing suggest edit/start new parent
> > environment(frame).  I don't see this in edit.  I'm on
> > lyx-2.4.0beta3.
>
> > --
> > lyx-users mailing list
> > lyx-users@lists.lyx.org
> > http://lists.lyx.org/mailman/listinfo/lyx-users
>
> Does Insert > Separated Frame [above/below] help?
>
> Scott
> --
> lyx-users mailing list
> lyx-users@lists.lyx.org
> http://lists.lyx.org/mailman/listinfo/lyx-users
>


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window sharing broken with current F38+kde+wayland

[Neal Becker]

For online meetings I have always used share window (as opposed to sharing
a chrome tab or entire screen).  Recently this has been broken.

Using current F38+kde+wayland.
Tested on teams and on google meet (same interface, must be part of KDE I
think).
If I select a window to share the tab for that window on the task manager
disappears, which gives me no way to move my cursor to that window and do
the presentation.

I find share a screen still works fine, and I guess I'll have to use that
for now.

Seems some recent change.  Along with it also there is a change to the way
the dialog for sharing appears, and for some reason you need to go through
2 different dialogs the confirm sharing 2 times.  This again is a recent
change.

Any ideas?

Thanks,
Neal
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Re: beamer usability

[Neal Becker]

On Fri, Aug 18, 2023 at 10:13 AM Scott Kostyshak  wrote:

> On Fri, Aug 18, 2023 at 07:49:45AM -0400, Neal Becker wrote:
> > I've been using LyX for quite a while and beamer for even quite a while
> > longer, but my knowledge of LyX is fairly superficial.
> >
> > I frequently produce slides which incorporate a graph on the left with
> > bulleted text on the right.  An example LaTeX code is below.  I do need
> to
> > use ERT for the minipage.  The reason for the minipage is to shrink the
> > text on the left.  I cut/paste LaTeX here because pasting LyX doesn't
> seem
> > to include the ERT.
> >
> > Since this structure is a bit tedious to enter I usually prefer to
> > copy/paste the frame, changing the text and the figure but keeping the
> > structure.
> >
> > This copy/pasting is a bit more difficult than I would hope.  Firstly, to
> > successfully copy/paste a beamer frame it is best to make sure there is a
> > frame separator.  Position the cursor just at the end of this frame
> > separator before the frame you wish to copy, then select down to the end
> of
> > the frame.
> >
> > When pasting, it seems best to position cursor just after a frame
> > separator.  If this is not done (frame separators not used) I frequently
> > wind up with a frame title outside of a frame, a situation that seems
> > difficult to recover from (although at least 1 time I did fix it by
> > positioning the cursor near the start of the frame title and selecting
> > "frame").
> >
> > Assuming I've placed the cursor at the end of the graphic of the frame
> I'd
> > like to copy, the procedure to get frame separator inserted seems
> tedious.
> > 1.  Hit enter.  Now I'm in "columns"
> > 2. Hit dedent.  Now I'm still in "columns" but outside the frame
> > 3. Change to "standard" . For some reason, this moves cursor back inside
> > frame
> > 4. Hit dedent again.  Now finally I can hit enter to produce the frame
> > separator.
> >
> > Is there an easier way?
> >
> > Thanks,
> > Neal
>
> For your specific question, does this thread help you out?
>
>   https://www.mail-archive.com/lyx-users@lists.lyx.org/msg104013.html
>
> Basically, if you figure out a command sequence that does what you want
> then you can bind it to a shortcut. I know this isn't out-of-the-box
> user-friendly, but perhaps it helps your use case.
>
> More generally, I've also found similar workflows to be unexpectedly
> complicated. I think that LyX's beamer workflow needs some improvements.
> Thankfully, LyX's beamer support was hugely improved several years ago.
> Before then, from what I understand it was a bunch of Beamer-specific hacks
> cobbled together; now it is just a well-defined special case of a document
> class. So I think the hard work is done, and all the required functionality
> is there, we just need to improve the interface/workflow.
>
> I have some ideas, based on sporadic discussions on the list. But I have
> no time to work on the code, and I do not want to start long conversations
> unless there is a volunteer willing to work on the code. Anyone who would
> be interested in working on the code, let me know and I will put the time
> into organizing my thoughts.
>
> In the meantime, I think it would be helpful to collect several use cases
> that are unexpected complicated, like the one that you bring up.
>
> Thanks.  I've never learned about key bindings or command sequences, maybe
it's time to learn about that.
Since insert frame separator is no longer on the menu it seems my procedure
has become more complex.
I looked at the email thread.  First thing suggest edit/start new parent
environment(frame).  I don't see this in edit.  I'm on
lyx-2.4.0beta3.
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Re: Screen casting - help wanted

[Neal Becker]

On Thu, Aug 17, 2023 at 3:56 AM Peter Boy  wrote:

> We have a new Quick Docs article about comparison of various screen
> casting tools in Fedora:
>
> https://docs.fedoraproject.org/en-US/quick-docs/screencast-apps-comparison/
>
> Everybody who used such a tool more or less recently, please habe a short
> look at the article and provide us with feedback
>
> - is it adequate for Fedora 37/38/
> - is something wrong
> - is something missing
>
> You may use the Issue (bug) button in the bar below the blue header to
> easily open a feedback form.
>
> May thanks.
> Peter
>
> In many cases what I/you want to record might be from a web browser.  In
that case chrome has plugins to do the job.   I use "screen recorder".
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beamer usability

[Neal Becker]

I've been using LyX for quite a while and beamer for even quite a while
longer, but my knowledge of LyX is fairly superficial.

I frequently produce slides which incorporate a graph on the left with
bulleted text on the right.  An example LaTeX code is below.  I do need to
use ERT for the minipage.  The reason for the minipage is to shrink the
text on the left.  I cut/paste LaTeX here because pasting LyX doesn't seem
to include the ERT.

Since this structure is a bit tedious to enter I usually prefer to
copy/paste the frame, changing the text and the figure but keeping the
structure.

This copy/pasting is a bit more difficult than I would hope.  Firstly, to
successfully copy/paste a beamer frame it is best to make sure there is a
frame separator.  Position the cursor just at the end of this frame
separator before the frame you wish to copy, then select down to the end of
the frame.

When pasting, it seems best to position cursor just after a frame
separator.  If this is not done (frame separators not used) I frequently
wind up with a frame title outside of a frame, a situation that seems
difficult to recover from (although at least 1 time I did fix it by
positioning the cursor near the start of the frame title and selecting
"frame").

Assuming I've placed the cursor at the end of the graphic of the frame I'd
like to copy, the procedure to get frame separator inserted seems tedious.
1.  Hit enter.  Now I'm in "columns"
2. Hit dedent.  Now I'm still in "columns" but outside the frame
3. Change to "standard" . For some reason, this moves cursor back inside
frame
4. Hit dedent again.  Now finally I can hit enter to produce the frame
separator.

Is there an easier way?

Thanks,
Neal

%

\begin{frame}{example}

\begin{columns}


\column{0.4\textwidth}


\selectlanguage{english}%

\scalebox{0.7}{\begin{minipage}{\textwidth}

\selectlanguage{american}%

\begin{itemize}

\item item1

\item item2

\end{itemize}

\selectlanguage{english}%

\end{minipage}}


\selectlanguage{american}%


\selectlanguage{english}%


\column{0.8\textwidth}

\selectlanguage{american}%

\begin{center}

\includegraphics[width=1\textwidth,page=3]{example}

\par\end{center}

\end{columns}

\end{frame}


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Re: shrinking Windows C: drive to make room for Linux

[Neal Becker]

On Thu, Aug 3, 2023 at 11:52 PM Tim via users 
wrote:

> On Thu, 2023-08-03 at 18:32 -0400, Neal Becker wrote:
> > I just went through this to install Fedora on my wife's laptop.  I
> > tried the windows shrink, but it would only free up 128MB of the 60GB
> > that should have been available.  I followed elaborate instructions
> > to tell windows not to use a paging file, and also turned off some
> > other feature that uses hidden space, but never got windows to free
> > up more than 128MB.  I gave up and stole the recovery partition,
> > which was 18GB.  Not much, but good enough for now.
>
> Asking the obvious:  Was the drive defragmented?
>
> I can't recall if I tried that.
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Re: Help needed: disabling system wide the Caps lock key in GNOME/Xwayland

[Neal Becker]

On Fri, Aug 4, 2023 at 4:28 AM wwp  wrote:

> Hello Tom,
>
>
> On Wed, 2 Aug 2023 09:35:29 -0400 Tom Horsley 
> wrote:
>
> > On Wed, 02 Aug 2023 13:11:07 +0930
> > Tim via users wrote:
> >
> > > Aren't there options for that in the keyboard preferences any more?  Is
> > > gnome tweaks still around, does that offer anything?
> >
> > As near as I can tell (the last time I looked, anyway), wayland has
> > completely eviscerated all the ability to tweak keys and mouse buttons.
> > For my mouse, I implemented a hardware solution (which should work
> > for keyboards as well with additional microcode):
> >
> > https://tomhorsley.com/hardware/mouse-tailor/mouse-tailor.html
> >
> > :-).
>
> Just curious, does this mean that xbindkeys wouldn't work in wayland?
>
>
> Regards,
>
> I'm typing this on kde/wayland with caps lock as an alternate control, so
it is more than possible.
*Those who don't understand recursion are doomed to repeat it*
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Re: shrinking Windows C: drive to make room for Linux

[Neal Becker]

On Thu, Aug 3, 2023 at 10:26 AM Bill Cunningham 
wrote:

>
> On 8/3/2023 6:14 AM, George N. White III wrote:
>
> On Thu, Aug 3, 2023 at 12:37 AM Michael Hennebry <
> henne...@web.cs.ndsu.nodak.edu> wrote:
>
>> None of the hits I got from search made explicit that one
>> could shrink the C: partition even while it was in use.
>> They focused on getting around Windows shrink's liomitations.
>> From the list responses, I gather that one can
>> indeed srink the C: partition while it is in use.
>>
>
> I've been shrinking the Windows partition to make space for linux using
> Windows Disk Management for years.   There are caveats.  See:
>
> <
> https://learn.microsoft.com/en-us/windows-server/storage/disk-management/shrink-a-basic-volume
> >
>
>
> --
> George N. White III
>
> One thing I have noticed while on the subject of partitions , is that most
> partition systems leave some extra space unaccounted for. I free this up
> with gparted myself. I haven't used windows to shrink a partition for a
> while and I am sure it does the same thing. Windows reports some space but
> not all of it, while gparted does report all the space.
>
> B
>
>
> I just went through this to install Fedora on my wife's laptop.  I tried
the windows shrink, but it would only free up 128MB of the 60GB that should
have been available.  I followed elaborate instructions to tell windows not
to use a paging file, and also turned off some other feature that uses
hidden space, but never got windows to free up more than 128MB.  I gave up
and stole the recovery partition, which was 18GB.  Not much, but good
enough for now.
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Re: Help needed: disabling system wide the Caps lock key in GNOME/Xwayland

[Neal Becker]

#!/bin/sh
setxkbmap -option caps:ctrl_modifier

On Wed, Aug 2, 2023 at 4:16 PM Ron Flory via users <
users@lists.fedoraproject.org> wrote:

> On 8/2/2023 10:42 AM, Thomas wrote:
> > Hello,
> >
> > I had that issue recently, the way I sorted it was with gsettings/dconf:
> >
> > gsettings set org.gnome.desktop.input-sources xkb-options
> "['ctrl:nocaps']"
> >
> > I suspect this is what gnome-tweaks does. Actually as far as I know,
> Wayland still sources xkb files, it's not very much documented but I recall
> having found a few places suggesting that (I use stock F38 with Gnome and
> Wayland).
> >
> > And thus see: man xkeyboard-config for a list of options which can be
> set, which is a bit wider than what gnome-tweaks propose.
> >
> > On Wed, 2 Aug 2023, at 15:56, murph nj wrote:
> >> Gnome tweaks has a simple solution to this.
> >>
> >> Install Tweaks through "Software" or
> >> dnf install gnome-tweaks
> >>
> >> Run Tweaks and go to the "Keyboard and Mouse" section.
> >> The 4th option down is an "Additional Layout options" button.
> >> There are many things you can remap the CapsLock key to, like Esc,
> ctrl, or
> >> my preference a Super key, since I usually use an IBM model M keyboard
> >> which does not have one.
> >>
> >> No need to revert back to X11, or any kind of hardware solution.
> >>
> >>
> >>
> >> On Tue, Aug 1, 2023 at 3:31 PM Joachim Backes 
> >> wrote:
> >>
> >>> Hi gys,
> >>> I'm running F38 with *Gnome/X-Wayland*, and in my environment I do not
> need (hate it) the *Caps Lock* key.Question: How to realize the disabling
> system wide, and how to get it working again?
> >>>
> >>> Regards
> >>>
> >>> Joachim Backes
> >>>
> >>> --
> >>>
> >>> Fedora release 38 (Thirty Eight)
> >>> 6.4.7-200.fc38.x86_64
> >>>
> >>> Joachim Backes  <
> joachim.bac...@rhrk.uni-kl.de>https://www-user.rhrk.uni-kl.de/~backes/
> >>>
> >>>
>
>   (hmmm, much top-posting up there)
>
>   Since nobody else has mentioned this (apologies if this does not
> address your needs, and you *really* hate the presence of the Caps-Lock
> key), but most motherboard BIOS's have a setting for startup "numlock
> state".  I always set mine to "Disabled" and it keeps the unwanted Caps
> keys away unless/until I explicitly (temporarily) enable them by hitting
> the Caps-Lock key.
>
> ron
>
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-- 
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Re: Since F38 Upgrade, Thunderbird Opens as Tiny, Postage Stamp

[Neal Becker]

On Sat, Jul 29, 2023 at 9:56 AM Tim Evans  wrote:

> Should have asked about this sooner, as it's something I've seen since
> the very first F38 upgrade. Not sure if this is Fedora or Thunderbird
> issue.
>
> When Thunderbird opens, it does so postage-stamp size, way up in upper
> left hand corner of window, so small I almost missed it at first.
> Right-clicking "maximize" restores it to full screen display.
>
You didn't say which desktop environment you're using.  If you're using
kde, you can set properties on the app to start maximized.  On other
desktop environments there's probably a similar setting, but I don't know
it.

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[X2Go-User] x2gokdrive doesn't like connection interruption

[Neal Becker]

client and server both fedora f38.
x2gokdriveclient-0.0.0.1-1.fc38.x86_64

I find that when connection gets interrupted 3 bad things can happen:

1. client uses 100% cpu

2. Trying to reconnect, screen starts to open and immediately closes.  Then 
on next attempt a new session starts, old session is lost.

3. With client connected, closing laptop lid should initiate sleep.  Instead 
client runs 100% cpu and machine doesn't sleep.

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slow startup chrome

[Neal Becker]

I'm sure it hasn't always been this way.  I'm using kde desktop.  After I
login, 1st thing I usually do is start chrome.  But recently when I do
this, chrome window doesn't appear for a long time.  Eventually, a dialog
box pops up asking me to unlock my wallet, or something like that.  As soon
as I close this dialog chrome window opens.  So something is causing chrome
to wait for wallet to open, and for some reason this doesn't happen for
about 30 sec or so.

Any ideas?

Thanks,
Neal
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Re: [X2Go-Dev] x2gokdrive build question

[Neal Becker]

Neal Becker wrote:

> Orion Poplawski wrote:
> 
>> On 6/27/23 07:50, Neal Becker wrote:
>>> Orion Poplawski wrote:
>>> 
>>>> On 6/22/23 05:24, Neal Becker wrote:
>>>>> Oh, I'd like to test kdrive on F38 when it's available.
>>>>
>>>> https://copr.fedorainfracloud.org/coprs/orion/x2go-kdrive/
>>>>
>>>> I've submitted the packages for review, but no one has picked them up
>>>> yet.
>>>>
>>>>
>>> sudo dnf install x2goserver-x2gokdrive
>>> Last metadata expiration check: 0:01:44 ago on Tue 27 Jun 2023 09:48:17
>>> AM EDT.
>>> Error:
>>>   Problem: conflicting requests
>>>- nothing provides xorg-x11-server-x2gokdrive needed by x2goserver-
>>> x2gokdrive-4.1.0.4-1.fc38.x86_64 from
>>> copr:copr.fedorainfracloud.org:orion:x2go-kdrive
>>> (try to add '--skip-broken' to skip uninstallable packages)
>> 
>> I accidentally removed some builds that I shouldn't have.  Try now.
>> 
> 
> So far:
> mate works
> /usr/bin/startplasma-x11 gives black screen then dies
> 

After some more testing:
1. mate works mostly.  Unfortunately, there seems to be clipboard issues.  I 
usually run copyq on client and server.  For some reason with x2gokdrive 
copyq uses 100% cpu on client side.  I tried other clipboard managers and 
did not get cut/paste to work.

2. testing with xfce so far seems to work 100%.  Another nice thing is it is 
working 100% with keyboard mapping on wayland client, which as I previously 
reported, standard x2go is not.

3. So far no luck with kde.  Selecting kde results in no startkde found.  No 
surprise since there is not /usr/bin/startkde on Fedora F38.  I think it's 
started as /usr/bin/startplasma-x11, which fails as described above.

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Re: [X2Go-Dev] x2gokdrive build question

[Neal Becker]

Orion Poplawski wrote:

> On 6/27/23 07:50, Neal Becker wrote:
>> Orion Poplawski wrote:
>> 
>>> On 6/22/23 05:24, Neal Becker wrote:
>>>> Oh, I'd like to test kdrive on F38 when it's available.
>>>
>>> https://copr.fedorainfracloud.org/coprs/orion/x2go-kdrive/
>>>
>>> I've submitted the packages for review, but no one has picked them up
>>> yet.
>>>
>>>
>> sudo dnf install x2goserver-x2gokdrive
>> Last metadata expiration check: 0:01:44 ago on Tue 27 Jun 2023 09:48:17
>> AM EDT.
>> Error:
>>   Problem: conflicting requests
>>- nothing provides xorg-x11-server-x2gokdrive needed by x2goserver-
>> x2gokdrive-4.1.0.4-1.fc38.x86_64 from
>> copr:copr.fedorainfracloud.org:orion:x2go-kdrive
>> (try to add '--skip-broken' to skip uninstallable packages)
> 
> I accidentally removed some builds that I shouldn't have.  Try now.
> 

So far:
mate works
/usr/bin/startplasma-x11 gives black screen then dies

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Re: [X2Go-Dev] x2gokdrive build question

[Neal Becker]

Orion Poplawski wrote:

> On 6/27/23 07:50, Neal Becker wrote:
>> Orion Poplawski wrote:
>> 
>>> On 6/22/23 05:24, Neal Becker wrote:
>>>> Oh, I'd like to test kdrive on F38 when it's available.
>>>
>>> https://copr.fedorainfracloud.org/coprs/orion/x2go-kdrive/
>>>
>>> I've submitted the packages for review, but no one has picked them up
>>> yet.
>>>
>>>
>> sudo dnf install x2goserver-x2gokdrive
>> Last metadata expiration check: 0:01:44 ago on Tue 27 Jun 2023 09:48:17
>> AM EDT.
>> Error:
>>   Problem: conflicting requests
>>- nothing provides xorg-x11-server-x2gokdrive needed by x2goserver-
>> x2gokdrive-4.1.0.4-1.fc38.x86_64 from
>> copr:copr.fedorainfracloud.org:orion:x2go-kdrive
>> (try to add '--skip-broken' to skip uninstallable packages)
> 
> I accidentally removed some builds that I shouldn't have.  Try now.
> 

tried running x2gokdriveclient from terminal on client side.  I get 
segfault.
This is running on wayland.

 where
#0  0x7f9243cb5f6b in xcb_send_request_with_fds64 (c=0x0, 
flags=flags@entry=0, 
vector=vector@entry=0x7ffefd36ab20, req=req@entry=0x7f9243cc2020 
, 
num_fds=num_fds@entry=0, fds=fds@entry=0x0)
at /usr/src/debug/libxcb-1.13.1-11.fc38.x86_64/src/xcb_out.c:229
#1  0x7f9243cb685f in xcb_send_request64 (c=, 
flags=flags@entry=0, 
vector=vector@entry=0x7ffefd36ab20, req=req@entry=0x7f9243cc2020 
)
at /usr/src/debug/libxcb-1.13.1-11.fc38.x86_64/src/xcb_out.c:349
#2  0x7f9243cb686d in xcb_send_request (c=, 
flags=flags@entry=0, 
vector=vector@entry=0x7ffefd36ab20, req=req@entry=0x7f9243cc2020 
)
at /usr/src/debug/libxcb-1.13.1-11.fc38.x86_64/src/xcb_out.c:355
#3  0x7f9243cb8f60 in xcb_grab_key (c=, 
owner_events=, 
grab_window=, modifiers=, key=, 
pointer_mode=, keyboard_mode=1 '\001')
at /usr/src/debug/libxcb-1.13.1-11.fc38.x86_64/src/xproto.c:4645
#4  0x55ed1692de19 in DisplayArea::grabKeyboard (this=0x55ed17c2aa10)
at ../src/displayarea.cpp:118
#5  DisplayArea::DisplayArea (this=, client=, 
parentWidget=, this=, client=, 
parentWidget=) at ../src/displayarea.cpp:110
#6  0x55ed1692a3e9 in Client::initDesktopMode 
(this=this@entry=0x55ed17c66940)
at ../src/client.cpp:266
#7  0x55ed169218a6 in Client::Client (this=0x55ed17c66940) at 
../src/client.cpp:211
#8  main (argc=, argv=) at ../src/main.cpp:38

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[Numpy-discussion] Re: mean_std function returning both mean and std

[Neal Becker]

On a somewhat related note, I usually find I need to compute stats
incrementally.  To do this, a stat object is created so batches of samples
can be fed to it sequentially.

I used to use an implementation based on boost::accumulator for this.  More
recently I'm using my own c++ code based on xtensor, exposed to python with
xtensor-python and pybind11.

The basic technique to find 2nd order stats is to keep 2 running sums,
sum(x) and sum(x**2).

It would be useful to have functionality for incremental stats like this in
numpy, as well as other incremental operations (e.g., histogram).  I
frequently find I need to process large amounts of data in small batches at
a time, generated by iterative monte-carlo simulations, for example.
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Re: [X2Go-Dev] x2gokdrive build question

[Neal Becker]

Orion Poplawski wrote:

> On 6/22/23 05:24, Neal Becker wrote:
>> Oh, I'd like to test kdrive on F38 when it's available.
> 
> https://copr.fedorainfracloud.org/coprs/orion/x2go-kdrive/
> 
> I've submitted the packages for review, but no one has picked them up yet.
> 
> 
sudo dnf install x2goserver-x2gokdrive
Last metadata expiration check: 0:01:44 ago on Tue 27 Jun 2023 09:48:17 AM 
EDT.
Error: 
 Problem: conflicting requests
  - nothing provides xorg-x11-server-x2gokdrive needed by x2goserver-
x2gokdrive-4.1.0.4-1.fc38.x86_64 from 
copr:copr.fedorainfracloud.org:orion:x2go-kdrive
(try to add '--skip-broken' to skip uninstallable packages)

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Re: Disable btrfs memory swap file

[Neal Becker]

On Tue, Jun 27, 2023 at 5:20 AM Patrick O'Callaghan 
wrote:

> On Mon, 2023-06-26 at 23:48 -0400, Jeffrey Walton wrote:
> > I've got a Fedora 38 install (upgrade from F37). The install happened
> > with Anaconda. Anaconda created the compressed memory swap file. I
> > resized the disk and added a proper swap partition. Now I need to
> > modify /etc/fstab and disable the compressed memory swap file. In the
> > screen text below, /dev/nvme0n1p4 is the new partition.
> >
>
> What does this have to do with BTRFS? The compressed memory swap file
> is present in Fedora, no matter what filesystem you use.
>
> man zramctl
>
> poc
>

I have sometimes hit a bug in gcc that caused (infinite?) memory growth.
Tried clang?
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Re: [X2Go-Dev] x2gokdrive build question

[Neal Becker]

Stefan Baur wrote:

> Am 23.06.23 um 14:04 schrieb Neal Becker:
>> Thanks!  I did a bit more reading, and I saw that kdrive doesn't yet
>> support
>> clipboard.  If true I guess it's not quite ready to replace the older
>> x2go server for me, I can't really work without a clipboard.
> 
> I just tried it and clipboard works fine for me, in both directions.
> Is there a Wiki page that might need updating? Please point me to it.
> Or are you confusing KDrive with Session Sharing/Mirroring (that is
> where clipboard, sound, etc. indeed do not work)?
> 
> Kind Regards,
> Stefan Baur
> 
https://wiki.x2go.org/doku.php/wiki:advanced:x2gokdrive:start
says "clipboard support" is "to be done"

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[Python-ideas] Re: Julia envy

[Neal Becker]

I think we can do better if we use fromiter and supply the size as count:

np.fromiter ((u**2 for u in range(10)), dtype=float, count=10)

On Fri, Jun 23, 2023 at 10:39 AM Joao S. O. Bueno 
wrote:

> If you use Python's own arrays and generator expressions instead of list
> comprehension (by just dropping the `[ ]`s),
> you will get each number converted to the target type in memory as soon as
> it is calculated. (It will be a full
> Python float/int instance during the calculation itself, though).
>
> This won't work with the usual numpy array constructors as those need the
> array size beforehand - but if you know
> the size beforehand, there is probably a numpy constructor with no need to
> go through Python arrays first (but I don't know one by heart)
> ```
> import numpy as np
> import array
>
>  data = np.array(array.array("b", (int(127 * cos(i/100)) for i in
> range(628))), dtype="int8", copy=False)
> ```
>
>
> On Fri, Jun 23, 2023 at 10:53 AM Neal Becker  wrote:
>
>> One item I admire from Julia and miss in python/numpy,
>>
>> I often use the power of python list comprehension to process data.  This
>> data often needs to be converted to numpy for other operations, for
>> example
>> fancy indexing.  The fact that operations using comprehensions (which
>> produce lists) and operations on numpy arrays use different incompatible
>> data structures requires conversions between lists and numpy arrays.
>> Comprehensions in Julia produce arrays directly (I believe), removing the
>> need for conversions.
>>
>> I don't see any easy way to improve this.  Any ideas?
>>
>> Thanks,
>> Neal
>>
>> --
>> *Those who don't understand recursion are doomed to repeat it*
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>

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[Python-ideas] Julia envy

[Neal Becker]

One item I admire from Julia and miss in python/numpy,

I often use the power of python list comprehension to process data.  This
data often needs to be converted to numpy for other operations, for example
fancy indexing.  The fact that operations using comprehensions (which
produce lists) and operations on numpy arrays use different incompatible
data structures requires conversions between lists and numpy arrays.
Comprehensions in Julia produce arrays directly (I believe), removing the
need for conversions.

I don't see any easy way to improve this.  Any ideas?

Thanks,
Neal

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Re: [X2Go-Dev] x2gokdrive build question

[Neal Becker]

Orion Poplawski wrote:

> On 6/22/23 05:24, Neal Becker wrote:
>> Oh, I'd like to test kdrive on F38 when it's available.
> 
> https://copr.fedorainfracloud.org/coprs/orion/x2go-kdrive/
> 
> I've submitted the packages for review, but no one has picked them up yet.
> 
> 

Thanks!  I did a bit more reading, and I saw that kdrive doesn't yet support 
clipboard.  If true I guess it's not quite ready to replace the older x2go 
server for me, I can't really work without a clipboard.

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Re: [X2Go-Dev] x2gokdrive build question

[Neal Becker]

Mike Gabriel wrote:

> Hi,
> 
> On  Fr 16 Jun 2023 05:44:31 UTC, Ulrich Sibiller wrote:
> 
>> As x2gokdrive is running on the server side you explicitly do not want to
>> see the input devices connected there. So I'd say this is correct.
>> X2gokdrive could, however, add (virtual) input devices code-wise anyway,
>> but does not need the hardware related udev for that.
>>
>> Maybe  I am missing something. If so, please correct me.
>>
>> Uli
> 
> I agree with that.
> Mike
> 
> 

Oh, I'd like to test kdrive on F38 when it's available.

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Re: Should NoneType be iterable?

[Neal Becker via Python-list]

On Mon, Jun 19, 2023 at 12:42 PM Chris Angelico via Python-list <
python-list@python.org> wrote:

> On Tue, 20 Jun 2023 at 02:37, Peter Bona via Python-list
>  wrote:
> >
> > Hi
> >
> > I am wondering if there has been any discussion why NoneType  is not
> iterable My feeling is that it should be.
> > Sometimes I am using API calls which return None.
> > If there is a return value (which is iterable) I am using a for loop to
> iterate.
> >
> > Now I am getting 'TypeError: 'NoneType' object is not iterable'.
> >
> > (Examples are taken from here
> https://rollbar.com/blog/python-typeerror-nonetype-object-is-not-iterable/
> )
> > Example 1:
> > mylist = None
> > for x in mylist:
> > print(x)  <== will raise TypeError: 'NoneType' object is not iterable
> > Solution: extra If statement
> > if mylist is not None:
> > for x in mylist:
> > print(x)
> >
> >
> > I think Python should handle this case gracefully: if a code would
> iterate over None: it should not run any step. but proceed the next
> statement.
> >
> > Has this been discussed or proposed?
> >
>
> Try this instead:
>
> for x in mylist or ():
>
> Now a None list will skip iteration entirely, allowing you to get the
> effect you want :)
>
> ChrisA
> --
> https://mail.python.org/mailman/listinfo/python-list
>
I prefer iteration of None to be an error, as in my usage it usually
indicates a mistake that I'd want to catch
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avoid nouveau with kernel 6.3?

[Neal Becker]

https://www.phoronix.com/news/Avoid-Nouveau-Linux-6.3

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f-string syntax deficiency?

[Neal Becker]

The following f-string does not parse and gives syntax error on 3.11.3:

f'thruput/{"user" if opt.return else "cell"} vs. elevation\n'

However this expression, which is similar does parse correctly:

f'thruput/{"user" if True else "cell"} vs. elevation\n'

I don't see any workaround.  Parenthesizing doesn't help:
 f'thruput/{"user" if (opt.return) else "cell"} vs. elevation\n'

also gives a syntax error
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[X2Go-User] wayland client keyboard mapping problems

[Neal Becker]

I've been using x2go for a long time now, with X11 on server and client.  I
use remapping of caps->ctrl (old emacs guy).  After struggling with
problems using X11 on client and server side, this seems to have been
resolved for the last couple of years and life was good.

Now I'm trying wayland on the client side.  So far things work, except the
keyboard mapping problem is back.  Every time I reconnect when I hit caps
in emacs (running on server) it is not mapped to ctrl.  Using xfce on
server (kde on client) I seem to each time need to open keyboard settings
(xfce) and fiddle with it toggling the cryptically-named Alt+ctrl keyboard
variant setting and then my mapping works again.

Any suggestions?  It would be great if it just worked, like it did on X11.
But if I could just run a cli command to fix it on the server each time I
connect I could also live with that.

Thanks,
Neal
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Re: Cannot install skypeforlinux

[Neal Becker]

Are you sure you even need to install an app?
https://www.skype.com/en/features/skype-web/
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Re: Chrome showing no text

[Neal Becker]

On Fri, May 5, 2023 at 5:40 PM Neal Becker  wrote:

>
> On Fri, May 5, 2023 at 2:17 PM Jeffrey Walton  wrote:
>
>> On Fri, May 5, 2023 at 1:13 PM steven stern  wrote:
>> >
>> > Something in one of the updates I installed today (but not Chrome) has
>> > broken chrome.  It's now showing any text.  Ideas?
>> > https://i.imgur.com/5DsPMMe.png
>>
>> Someone reported something similar on Reddit at r/Fedora,
>>
>> https://www.reddit.com/r/Fedora/comments/138vba0/chrome_broken_after_today_update/
>> . Comment was made and it is already reported:
>> https://bugzilla.redhat.com/show_bug.cgi?id=2193335 .
>>
>> > (No, not using Chrome isn't really an option.)
>>
>> I just reported something similar here.  I switched to google-chrome-beta
>> and it's working fine.
>
>
I got a dnf update to google-chrome-stable today and it seems to be working.
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Re: nvidia problem F37->F38 update

[Neal Becker]

On Sat, May 6, 2023 at 4:04 AM Barry  wrote:

>
>
> > On 5 May 2023, at 21:48, Jeffrey Walton  wrote:
> >
> > On Fri, May 5, 2023 at 4:04 PM Tim via users
> >  wrote:
> >>
> >> Tim:
>  Are you falling foul of the recent Gnome change that puts a machine
>  to sleep if it considers that it's been idle for about 15 minutes?
> 
>  One of the all-time *DUMB* moves by Gnome.
> >>
> >> George N. White III:
> >>> Not at all.  Large organizations are trying to reduce power
> >>> consumption by workstations sitting idle overnight, during meetings,
> >>> lunch breaks, etc.
> >>
> >> And what do you think they're going to do?  Undo that setting, so that
> >> they don't have to deal with employees annoyed at having to wake up
> >> their PCs all day long because they don't actually use the PC
> >> constantly to keep it awake, but do need to refer to it a lot, and the
> >> wait for resumption while trying to keep a customer on the phone is
> >> being a pain, an inability for IT to remotely manage PCs when they
> >> want, and debugging PCs that don't wake from suspend/hibernation.
> >>
> >> Greenwashing...
> >
> > The most annoying thing (to me) was, Fedora maintainers did not make
> > the setting default for new installs. Instead, they changed the
> > setting for existing installs, like  a F37 -> F38 system upgrade.
>
> I read elsewhere that the setting change is to the default.
> If you had ever changed the power settings the default is not used
> apparently.
>
> The default is used on new installs, and because it is the default also
> applies to upgrades, as i say, if you had not changed the default power
> settings.
>
> I am not a gnome used so have no direct experience of this change.
>
> Barry
>
> >
> > It really annoyed me when a couple of my machines went to sleep and I
> > had to drive across town to wake them and reconfigure them.
> >
> > Jeff
>

Same here, I guess it didn't happen on my test machine that I updated first
because that was switched to sddm, another way to avoid this.
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Re: Chrome showing no text

[Neal Becker]

On Fri, May 5, 2023 at 2:17 PM Jeffrey Walton  wrote:

> On Fri, May 5, 2023 at 1:13 PM steven stern  wrote:
> >
> > Something in one of the updates I installed today (but not Chrome) has
> > broken chrome.  It's now showing any text.  Ideas?
> > https://i.imgur.com/5DsPMMe.png
>
> Someone reported something similar on Reddit at r/Fedora,
>
> https://www.reddit.com/r/Fedora/comments/138vba0/chrome_broken_after_today_update/
> . Comment was made and it is already reported:
> https://bugzilla.redhat.com/show_bug.cgi?id=2193335 .
>
> > (No, not using Chrome isn't really an option.)
>
> I just reported something similar here.  I switched to google-chrome-beta
> and it's working fine.
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F38 update, chrome display problem

[Neal Becker]

After updating f37->f38, now chrome-stable is unusable.  This is intel
graphics.
The displays of all web pages are unreadable.

I tried installing google-chrome-beta, and this seems to be working fine.

Any thoughts?

Thanks,
Neal
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Re: nvidia problem F37->F38 update

[Neal Becker]

On Thu, May 4, 2023 at 6:13 PM Neal Becker  wrote:

>
>
> On Thu, May 4, 2023 at 5:50 PM Todd Zullinger  wrote:
>
>> Tim via users wrote:
>> > On Thu, 2023-05-04 at 16:20 -0400, Neal Becker wrote:
>> >
>> >> I may have another problem but time will tell (running on the newer
>> >> kernel connecting via ssh several times I've walked away and then the
>> >> machine is nonresponsive to ping, have to force power cycle to
>> >> recover.)
>> >
>> > Are you falling foul of the recent Gnome change that puts a machine to
>> > sleep if it considers that it's been idle for about 15 minutes?
>> >
>> > One of the all-time *DUMB* moves by Gnome.
>>
>> And if so, this post in the Common Issues area should help
>> adjust the settings:
>>
>>
>> https://discussion.fedoraproject.org/t/gnome-suspends-after-15-minutes-of-user-inactivity-even-on-ac-power/79801
>>
>> This doesn't affect Fedora Server, so if the system is only
>> used as a server, installing from the Server image instead
>> of Workstation might help avoid any future changes which are
>> aimed at laptop/desktop users. (I don't care for this change
>> either way -- but it's much easier to deal with on a local
>> system than a remote server.)
>>
>> This is used as a server and only usually accessed remotely.  Would this
> shutdown the machine even if nobody had logged in at the
> console display?
>

Just to clarify, it is used as a server but workstation edition is
installed on it.
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Re: nvidia problem F37->F38 update

[Neal Becker]

On Thu, May 4, 2023 at 5:50 PM Todd Zullinger  wrote:

> Tim via users wrote:
> > On Thu, 2023-05-04 at 16:20 -0400, Neal Becker wrote:
> >
> >> I may have another problem but time will tell (running on the newer
> >> kernel connecting via ssh several times I've walked away and then the
> >> machine is nonresponsive to ping, have to force power cycle to
> >> recover.)
> >
> > Are you falling foul of the recent Gnome change that puts a machine to
> > sleep if it considers that it's been idle for about 15 minutes?
> >
> > One of the all-time *DUMB* moves by Gnome.
>
> And if so, this post in the Common Issues area should help
> adjust the settings:
>
>
> https://discussion.fedoraproject.org/t/gnome-suspends-after-15-minutes-of-user-inactivity-even-on-ac-power/79801
>
> This doesn't affect Fedora Server, so if the system is only
> used as a server, installing from the Server image instead
> of Workstation might help avoid any future changes which are
> aimed at laptop/desktop users. (I don't care for this change
> either way -- but it's much easier to deal with on a local
> system than a remote server.)
>
> This is used as a server and only usually accessed remotely.  Would this
shutdown the machine even if nobody had logged in at the
console display?
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Re: nvidia problem F37->F38 update

[Neal Becker]

On Thu, May 4, 2023 at 3:09 PM Tim Evans  wrote:

> On 5/4/23 14:37, Neal Becker wrote:
> > Just updated my server F37->F38.  The display doesn't start (black
> > screen after boot).
> >
> > journalctl shows many messages like:
> >
> > May 04 14:32:00 nbecker8 kernel: nouveau :01:00.0: bus: MMIO read of
> >  FAULT at 616330 [ PRIVRING ]
> >
> > nouveau?  This was running nvidia driver before the update (from
> rpmfusion).
> > Any ideas?
>
> Had this happen to me as well.  Booted back to the last F37 kernel and
> problem went away.  Current F38 kernel (6.2.14-300.fc38.x86_64) works ok.
>

Well I did boot from previous kernel, in this case 6.2.14-200.fc37.x86_64
(don't have an older fc38 kernel, I wasn't able to update to F38 until
today), and display is working fine.  I may have another problem but time
will tell (running on the newer kernel connecting via ssh several times
I've walked away and then the machine is nonresponsive to ping, have to
force power cycle to recover.)
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nvidia problem F37->F38 update

[Neal Becker]

Just updated my server F37->F38.  The display doesn't start (black screen
after boot).

journalctl shows many messages like:

May 04 14:32:00 nbecker8 kernel: nouveau :01:00.0: bus: MMIO read of
 FAULT at 616330 [ PRIVRING ]

nouveau?  This was running nvidia driver before the update (from rpmfusion).
Any ideas?

Thanks,
Neal
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Re: Aaugh! F38 mplayer, ffmpeg, etc. install errors

[Neal Becker]

OK, thanks.  Guess I'll just wait for it to resolve itself.

On Tue, Apr 25, 2023 at 5:42 PM Andre Robatino 
wrote:

> BTW, this isn't a new problem. It happens at least once every few months,
> it's just by chance that it happened shortly after F38 was released.
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-- 
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Re: Aaugh! F38 mplayer, ffmpeg, etc. install errors

[Neal Becker]

Lucky you, I'm stuck for last week at
 Problem: cannot install the best update candidate for package
qt5-qtbase-5.15.9-1.fc37.x86_64
  - cannot install both qt5-qtbase-5.15.9-1.fc38.x86_64 and
qt5-qtbase-5.15.8-10.fc38.x86_64
  - package libksysguard-5.27.4-1.fc38.x86_64 requires
libQt5WebEngineWidgets.so.5()(64bit), but none of the providers can be
installed
  - package libksysguard-5.27.4-1.fc38.x86_64 requires
libQt5WebEngineWidgets.so.5(Qt_5)(64bit), but none of the providers can be
installed
  - package libksysguard-5.27.4-1.fc38.x86_64 requires
libQt5WebEngineCore.so.5()(64bit), but none of the providers can be
installed
  - package libksysguard-5.27.4-1.fc38.x86_64 requires
libQt5WebEngineCore.so.5(Qt_5)(64bit), but none of the providers can be
installed
  - conflicting requests
  - package qt5-qtwebengine-5.15.12-3.fc38.x86_64 requires
qt5-qtbase(x86-64) = 5.15.8, but none of the providers can be installed
  - package qt5-qtwebengine-freeworld-5.15.12-1.fc38.x86_64 requires
qt5-qtbase(x86-64) = 5.15.8, but none of the providers can be installed

On Sun, Apr 23, 2023 at 9:44 PM Andre Robatino 
wrote:

> I didn't have the problem on F37 either, it only appeared in F38, so I
> don't know why it's in the Fedora 37 section.
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Re: Test upgrades from F37 to F38 - it will take you just a minute

[Neal Becker]

If I add --allowerasing, some packages will be removed:
Removing dependent packages:
 ffmpeg-free   x86_64 5.1.3-1.fc37
@updates   2.2 M
 libavcodec-free   x86_64 5.1.3-1.fc37
@updates   9.6 M
 libavdevice-free  x86_64 5.1.3-1.fc37
@updates   228 k
 libavfilter-free  x86_64 5.1.3-1.fc37
@updates   4.4 M
 libavformat-free  x86_64 5.1.3-1.fc37
@updates   2.6 M
 libavutil-freex86_64 5.1.3-1.fc37
@updates   836 k
 libpostproc-free  x86_64 5.1.3-1.fc37
@updates   127 k
 libswresample-freex86_64 5.1.3-1.fc37
@updates   152 k
 libswscale-free   x86_64 5.1.3-1.fc37
@updates   632 k

On Tue, Apr 18, 2023 at 7:40 PM Neal Becker  wrote:

> Error:
>  Problem 1: problem with installed package ffmpeg-free-5.1.3-1.fc37.x86_64
>   - package ffmpeg-6.0-6.fc38.x86_64 conflicts with ffmpeg-free provided
> by ffmpeg-free-6.0-2.fc38.x86_64
>   - ffmpeg-free-5.1.3-1.fc37.x86_64 does not belong to a distupgrade
> repository
>   - conflicting requests
>  Problem 2: problem with installed package firefox-112.0-3.fc37.x86_64
>   - conflicting requests
>   - package ffmpeg-libs-6.0-6.fc38.i686 conflicts with libavcodec-free
> provided by libavcodec-free-6.0-2.fc38.x86_64
>   - package ffmpeg-libs-6.0-6.fc38.x86_64 conflicts with libavcodec-free
> provided by libavcodec-free-6.0-2.fc38.x86_64
>   - problem with installed package libavcodec-free-5.1.3-1.fc37.x86_64
>   - libavcodec-free-5.1.3-1.fc37.x86_64 does not belong to a distupgrade
> repository
>   - firefox-112.0-3.fc37.x86_64 does not belong to a distupgrade repository
> (try to add '--allowerasing' to command line to replace conflicting
> packages or '--skip-broken' to skip uninstallable packages)
>
> On Sun, Apr 16, 2023 at 5:49 AM Zbigniew Jędrzejewski-Szmek <
> zbys...@in.waw.pl> wrote:
>
>> On Sat, Apr 15, 2023 at 06:30:36PM -0400, Elliott Sales de Andrade wrote:
>> > > >   - problem with installed package
>> msv-xsdlib-1:2013.6.1-19.fc33.noarch
>> > > > (try to add '--skip-broken' to skip uninstallable packages)
>> > >
>> > > I'll add this one to fedora-obsolete-packages.
>> > >
>> > >
>> > It looks like you've only added the main package msv [0]. However, that
>> > package doesn't exist as a binary rpm, the srpm only produces msv-*
>> > subpackages [1]. And obsoleting the main package won't obsolete the
>> > subpackages, so this conflict is not fixed yet. I'm not sure if any of
>> the
>> > other msv-* subpackages should also be obsoleted or just msv-xsdlib.
>>
>> I adjusted f-o-p to just list them all. I don't think we want to keep some
>> subset of the subpackages.
>>
>> Zbyszek
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>
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>


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Re: Test upgrades from F37 to F38 - it will take you just a minute

[Neal Becker]

Error:
 Problem 1: problem with installed package ffmpeg-free-5.1.3-1.fc37.x86_64
  - package ffmpeg-6.0-6.fc38.x86_64 conflicts with ffmpeg-free provided by
ffmpeg-free-6.0-2.fc38.x86_64
  - ffmpeg-free-5.1.3-1.fc37.x86_64 does not belong to a distupgrade
repository
  - conflicting requests
 Problem 2: problem with installed package firefox-112.0-3.fc37.x86_64
  - conflicting requests
  - package ffmpeg-libs-6.0-6.fc38.i686 conflicts with libavcodec-free
provided by libavcodec-free-6.0-2.fc38.x86_64
  - package ffmpeg-libs-6.0-6.fc38.x86_64 conflicts with libavcodec-free
provided by libavcodec-free-6.0-2.fc38.x86_64
  - problem with installed package libavcodec-free-5.1.3-1.fc37.x86_64
  - libavcodec-free-5.1.3-1.fc37.x86_64 does not belong to a distupgrade
repository
  - firefox-112.0-3.fc37.x86_64 does not belong to a distupgrade repository
(try to add '--allowerasing' to command line to replace conflicting
packages or '--skip-broken' to skip uninstallable packages)

On Sun, Apr 16, 2023 at 5:49 AM Zbigniew Jędrzejewski-Szmek <
zbys...@in.waw.pl> wrote:

> On Sat, Apr 15, 2023 at 06:30:36PM -0400, Elliott Sales de Andrade wrote:
> > > >   - problem with installed package
> msv-xsdlib-1:2013.6.1-19.fc33.noarch
> > > > (try to add '--skip-broken' to skip uninstallable packages)
> > >
> > > I'll add this one to fedora-obsolete-packages.
> > >
> > >
> > It looks like you've only added the main package msv [0]. However, that
> > package doesn't exist as a binary rpm, the srpm only produces msv-*
> > subpackages [1]. And obsoleting the main package won't obsolete the
> > subpackages, so this conflict is not fixed yet. I'm not sure if any of
> the
> > other msv-* subpackages should also be obsoleted or just msv-xsdlib.
>
> I adjusted f-o-p to just list them all. I don't think we want to keep some
> subset of the subpackages.
>
> Zbyszek
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Re: resume enumerate for beamer

[Neal Becker]

The usage of this environment is, it will continue numbering of whatever
enumeration preceded it?  Presumably also works across slides?
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Re: resume enumerate for beamer

[Neal Becker]

On Wed, Mar 29, 2023 at 1:00 AM Jürgen Spitzmüller 
wrote:

> Am Dienstag, dem 28.03.2023 um 07:47 -0400 schrieb Neal Becker:
> > I'm trying to do resume enumeration in beamer.  I read instructions
> > to use doc settings, modules, list enhancements, customizable lists,
> > but the "add" button is grayed out.  I'm assuming this is because of
> > compatibility with beamer, as a test I see I can add it to an
> > amsarticle document.
>
> Sure you tried the beamer-resenumerate.module from here?
> https://wiki.lyx.org/Layouts/Modules#toc12
>
> --
> Jürgen
> --
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> lyx-users@lists.lyx.org
> http://lists.lyx.org/mailman/listinfo/lyx-users
>
Thanks for the suggestion!  Unfortunately tried on lyx-2.4-dev and got

! Undefined control sequence.

\beamer@enum@ ...fix item}##1}\beamer@cramped

\raggedright \beamer@first...

l.47 \item


Attached is a minimal example using beamer, with only this
beamer-resenumerate (not title page or frames).

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newfile2.lyx
Description: application/lyx
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resume enumerate for beamer

[Neal Becker]

I'm trying to do resume enumeration in beamer.  I read instructions to use
doc settings, modules, list enhancements, customizable lists, but the "add"
button is grayed out.  I'm assuming this is because of compatibility with
beamer, as a test I see I can add it to an amsarticle document.

I also saw here:
https://tex.stackexchange.com/questions/365974/resuming-a-list-in-lyx
That I should be able to right click on an enum item and see enumerate
options, but I don't get this choice (this is 2.4-devel).

Any suggestions?

Thanks,
Neal
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Re: csv2lyx.py throwing an error

[Neal Becker]

Yes I reported same a week or so back.  Change "ru" to "r"

On Thu, Mar 23, 2023, 8:03 PM John White  wrote:

> Go linux 
>
> On Thursday, March 23, 2023 3:38:24 PM PDT Dr Eberhard W Lisse wrote:
>
> > Hi,
>
> >
>
> > I have tried to File -> Import -> Table (CSV) a small CSV file
>
> > into a LyX document and receive an error, which I can reproduce
>
> > from the command line for Python 3.9 3.10 and 3.11.2 (my default)
>
> > like so:
>
> >
>
> > python -tt
> /Applications/LyX.app/Contents/Resources/scripts/csv2lyx.py
>
> > i.csv i.lyx
>
> >
>
> > always yielding this error:
>
> >
>
> > Traceback (most recent call last):
>
> >   File "/Applications/LyX.app/Contents/Resources/scripts/csv2lyx.py",
>
> > line 171, in 
>
> > input_file = "".join(open(infile,'rU').readlines())
>
> > ^
>
> > ValueError: invalid mode: 'rU'
>
> >
>
> > This is on my spanking new M2 Airbook MacOs 13.2.1 and the MacTeX
>
> > 2023 as well as on my Intel iMac.
>
> >
>
> > Does anyone have an idea what to do about this?
>
> >
>
> > greetings, el
>
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[Numpy-discussion] Re: broadcasting question

[Neal Becker]

On Thu, Mar 23, 2023 at 5:21 AM Sebastian Berg 
wrote:

> On Wed, 2023-03-22 at 12:00 -0400, Robert Kern wrote:
> > On Wed, Mar 22, 2023 at 9:34 AM Neal Becker 
> > wrote:
> >
> > > I have a function F
> > > def F(a, b):
> > > c = a * b
> > >
> > > Initially, a is a scalar, b[240,3000].  No problem.
> > > Later I want to use F, where a[240] is a vector.  I want to allow
> > > both the
> > > scalar and vector cases.  So I write:
> > >
> > > def F(a,b):
> > >   a = np.atleast_1d(a)
> > >   c = a[:,None] * b
> > >
> > > This now works for scalar a or vector a.  But this solutions seems
> > > inelegant, and somewhat fragile.  Suppose later we want to allow
> > > a[240,3000], a 2d array matching b.
> > >
> > > Certainly don't want to write code like:
> > > if a.ndim == 0:...
> > >
> > > Is there a more elegant/robust approach?
> > >
> >
> > I would leave it as `c = a * b` and simply record in the docstring
> > that `a`
> > and `b` should be broadcastable. Yes, that means that the user will
> > have to
> > write `F(a[:, np.newaxis], b)` for that one case, and that looks a
> > little
> > ugly, but overall it's less cognitive load on the user to just reuse
> > the
> > common convention of broadcasting than to record the special case.
>
>
> I will note that it is not hard to insert the new axes.
> `np.expand_dims` may be convenient.  many functions (ufuncs) also have
> the `outer` version which does this: `np.add.outer()`, etc.
>
> However, I agree.  Unless the use-case exceedingly clear about
> requiring "outer" behavior.  "outer" behavior is uncommon for functions
> in the NumPy world and broadcasting is what users will generally expect
> (and that includes future self).
>
> - Sebastian
>
> Thanks for the advice!  On reflection, I agree.
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[Numpy-discussion] broadcasting question

[Neal Becker]

I have a function F
def F(a, b):
c = a * b

Initially, a is a scalar, b[240,3000].  No problem.
Later I want to use F, where a[240] is a vector.  I want to allow both the
scalar and vector cases.  So I write:

def F(a,b):
  a = np.atleast_1d(a)
  c = a[:,None] * b

This now works for scalar a or vector a.  But this solutions seems
inelegant, and somewhat fragile.  Suppose later we want to allow
a[240,3000], a 2d array matching b.

Certainly don't want to write code like:
if a.ndim == 0:...

Is there a more elegant/robust approach?

Thanks,
Neal
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Re: Tramp Debugging and Network Performance

[Neal Becker]

I find that using dired-rsync over tramp is a lot faster than dired copy,
although this is just my impression.  I usually use scp:// with 1 hop on an
otherwise pretty fast connection.

On Sun, Mar 12, 2023 at 5:37 PM Miguel Suarez 
wrote:

> I use multihops, but the performance isn’t great even with one simple
> connection without it.
>
> In my config, I have:
> Host *
>   ControlMaster  auto
>   ControlPath  /tmp/ssh-%r@%h:%p
>   ControlPersist  yes
>   Compression  yes
>
> > 12/3/23 18:21、Michael Albinus のメール:
> >
> > suarezmigu...@icloud.com writes:
> >
> >> Hello Tramp Community,
> >
> > Hi,
> >
> >> I tend to connect to several servers through a middleware one, problem
> >> being that the performance of tramp over implementations like eshell,
> >> dired and even find-file is slow, even though the connection is pretty
> >> fast via shell’s SSH, even through the middleware.
> >>
> >> I’m using Emacs 28.2 with the Doom framework,
> >
> > Could you pls give some more details? Do you use multi-hops? Do you have
> > some special configuration in your ~/.ssh/config?
> >
> >> Thank you for your advice into this topic!.
> >
> > Best regards, Michael.
>
>
>

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