Re: (unable to start a new discussion) Re: Can surf the internet, but not my home network...

2021-09-17 Thread David Christensen
On 9/17/21 1:46 AM, Brian wrote: However, a new discussion should be started in a*new* thread, not plonked willy-nilly into an existing thread. This is the second time recently that someone has done that. The first time it involved an experienced user! Guilty as charged. :-( Using

Re: Can surf the internet, but not my home network...

2021-09-16 Thread David Christensen
On 9/16/21 12:40 AM, Andrei POPESCU wrote: On Mi, 15 sep 21, 17:48:39, Hans wrote: Am Mittwoch, 15. September 2021, 16:41:21 CEST schrieb nimrod: Hi, got the same problem, when the ethernet interface is up, too and I am on wifi. This a problem with the gateway settings. Unless my

Re: Can surf the internet, but not my home network...

2021-09-15 Thread David Christensen
On 9/15/21 7:41 AM, nimrod wrote: Hi, my devices (pc, laptops, smartphone) all can surf the internet without problems. So one would say that the router is working properly. But computer A cannot access computer B via SSH as it's alwais being doing for years, and viceversa. They cannot even

Re: debian-installer RAID question

2021-09-12 Thread David Christensen
On 9/11/21 9:55 AM, Felix Natter wrote: hello fellow Debian users, I have an SSD for the root filesystem, and two HDDs using RAID1 for /storage running Debian10. Now I need a plan B in case the upgrade fails. So I made an experiment with a VM and rougly the same setup (disk-wise), and found

Re: How to format with stride/stripe_width options during install

2021-09-10 Thread David Christensen
On 9/9/21 11:52 PM, Robert Arkiletian wrote: On Thu, Sep 9, 2021 at 11:14 AM David Christensen wrote: On 9/8/21 11:07 PM, Robert Arkiletian wrote: Installing Debian 11 with netinst CD on a server with hardware raid. Installer has no custom format parameters option for ext4, like stride

Re: How to format with stride/stripe_width options during install

2021-09-09 Thread David Christensen
On 9/8/21 11:07 PM, Robert Arkiletian wrote: Installing Debian 11 with netinst CD on a server with hardware raid. Installer has no custom format parameters option for ext4, like stride and stripe_width. How does one format the raid partitions with these options during OS installation? What is

Re: smart fans

2021-09-07 Thread David Christensen
On 9/6/21 6:03 PM, Emanuel Berg wrote: David Christensen wrote: You seem to have got the old file again, check it out again, because some of those issues have already been mentioned/fixed: https://dataswamp.org/~incal/ebchw/cpu.txt Much better: http://www.holgerdanske.com/pub/dpchrist

Re: smart fans

2021-09-04 Thread David Christensen
On 9/3/21 7:42 PM, Emanuel Berg wrote: David Christensen wrote: OK, changed. Your data format still has issues. You seem to have got the old file again, check it out again, because some of those issues have already been mentioned/fixed: https://dataswamp.org/~incal/ebchw/cpu.txt

Re: smart fans

2021-09-03 Thread David Christensen
On 9/3/21 3:05 PM, Emanuel Berg wrote: David Christensen wrote: Feeding the raw data into LibreOffice Calc was problematic OK, changed. Your data format still has issues. This is what LibreOffice Calc wants: time,governor,processes,CPU_temperature,system_load,CPU_fan_speed,core1_freq

Re: Install Debian 10 amd64 onto USB flash drive with and for Macintosh

2021-09-02 Thread David Christensen
On 9/2/21 5:37 PM, David Wright wrote: On Wed 01 Sep 2021 at 16:00:13 (-0700), David Christensen wrote: [three long posts] That was very useful. I've condensed it into a file (attached) for my own use. The footnotes are notes, guesses and queries. I tried to file a bug report against

Re: Install Debian 10 amd64 onto USB flash drive with and for Macintosh

2021-09-01 Thread David Christensen
On 9/1/21 1:15 AM, didier gaumet wrote: Hello, Hello. :-) Le mardi 31 août 2021 à 15:31 -0700, David Christensen a écrit : [...] I would like to install Debian 10 onto a USB flash drive as a self-contained, bootable, full, live installation that I use with this and other Intel-based

Re: Install Debian 10 amd64 onto USB flash drive with and for Macintosh

2021-08-31 Thread David Christensen
On 8/31/21 3:53 PM, Dan Ritter wrote: David Christensen wrote: debian-user: I have an Apple MacBook Pro (Retina, 15-inch, Mid 2015) with an Intel Core i7-4770HQ processor, 16 GB memory, and 256 GB SSD: If I now power up the machine with the buster-mac USB flash drive installed, Debian starts

Install Debian 10 amd64 onto USB flash drive with and for Macintosh

2021-08-31 Thread David Christensen
debian-user: I have an Apple MacBook Pro (Retina, 15-inch, Mid 2015) with an Intel Core i7-4770HQ processor, 16 GB memory, and 256 GB SSD: https://support.apple.com/kb/SP719?viewlocale=en_US=en_US https://en.wikipedia.org/wiki/MacBook_Pro The laptop has two USB 3.0 ports. I would

Re: Soft link confusion

2021-08-29 Thread David Christensen
On 8/29/21 4:59 PM, Gary L. Roach wrote: Hi all, I don't have occasion to use links very often and tend to get confused as to which direction the link is pointing. Specifically, I am trying to redirect backuppc files from the normal /var/lib/backuppc directory to another disk mounted at

Re: LUKS encryption help

2021-08-29 Thread David Christensen
On 8/28/21 10:09 PM, detr...@tuta.io wrote: ... I have updated the BIOS. 1.  What is the make and model of the external hard drive? It is a 1Tb WD Elements WDBUZG0010BBK 2. What ISO image did you use to install Debian onto the external hard drive? What media did you put the Debian

Re: smart fans

2021-08-29 Thread David Christensen
On 8/28/21 3:55 PM, Emanuel Berg wrote: David Christensen wrote: You want to watch the test run, so that you can monitor progress, make adjustments, and/or stop it if things go badly. Don't worry about it... Here are the 20 first lines of the output: time, governor, processes, CPU

Re: LUKS encryption help

2021-08-26 Thread David Christensen
On 8/25/21 6:37 PM, detr...@tuta.io wrote: Good evening, I'm having some worrying problems with LUKS my Debian 10 installation on an external hard drive. As I'm not very technical, I'll try to explain what I did and what is happening now in chronological order. Around May I installed Debian

Re: New SSD card for old dell 850

2021-08-25 Thread David Christensen
On 8/25/21 4:59 AM, juh wrote: Dear all, there is a LITEONIT LMT-32L3M (LWDA) in my dell xps 850 desktop computer. I use it for the boot and system partitions, home is on a hard disk. The SSD only has 32GB and I am pondering whether I can just attach a bigger one and reinstall debian

Re: smart fans

2021-08-24 Thread David Christensen
On 8/24/21 3:17 PM, Emanuel Berg wrote: I'll run it next time I go for a walk... You want to watch the test run, so that you can monitor progress, make adjustments, and/or stop it if things go badly. Have you identified the sound source(s) that are most annoying? David

Re: smart fans

2021-08-24 Thread David Christensen
On 8/23/21 3:17 PM, David Christensen wrote: Here is a Perl one-liner that should peg one core: $ perl -e "1 while 1" Here is a Perl one-liner that can do between 0 and 100 percent loading of one core: 2021-08-24 02:13:06 dpchrist@dipsy ~ $ perl -MTime::HiRes=time,sleep -e '

Re: smart fans

2021-08-24 Thread David Christensen
On 8/23/21 10:25 PM, Emanuel Berg wrote: David Christensen wrote: For a CPU with N cores (N=4 for an AMD Ryzen 3 3200G?) and an otherwise unloaded system, your test procedure should be something like: loop over governor choices set governor loop 3 times sleep 60

Re: smart fans

2021-08-24 Thread David Christensen
On 8/23/21 8:09 PM, Emanuel Berg wrote: David Christensen wrote: Doubling the sound energy adds 3 db. So, the two loudest fans are around 19 dB. The HDD is 2.9 Bel = 29 dB. So the total worse-case is 35.4 dB? (With the GPU, PSU and one fan still unaccounted for.) ;;; -*- lexical-binding

Re: smart fans

2021-08-23 Thread David Christensen
On 8/23/21 5:26 PM, Emanuel Berg wrote: David Christensen wrote: Nice case. :-) Yeah, I guess :) The purpose of the plate at the bottom is to form a thermally isolated chamber for the the power supply. The unperforated portions of the top surface could be covered with sound absorbing

Re: smart fans

2021-08-23 Thread David Christensen
On 8/23/21 5:05 PM, Emanuel Berg wrote: David Christensen wrote: But changing the profile (governor) doesn't produce any (noticable?) sound level change and also the temperature of the CPU and the GPU seem unaffected. You will not notice a change in CPU fan temperature or speed profiles

Re: smart fans

2021-08-23 Thread David Christensen
On 8/23/21 3:42 PM, David Christensen wrote: On 8/23/21 2:25 PM, Thomas Schmitt wrote: Hi, Emanuel Berg photographed: https://dataswamp.org/~incal/ebchw/fan-top.jpg Conspicuously absent are drive cages; but I do see drive case mounting screw holes.  If drives are not needed, the mounting

Re: smart fans

2021-08-23 Thread David Christensen
On 8/23/21 2:25 PM, Thomas Schmitt wrote: Hi, Emanuel Berg photographed: https://dataswamp.org/~incal/ebchw/fan-top.jpg The case fans look like they would produce a lot of wind if really running at full speed. Whatever, i'd make a closer photo, unplug them, listen how much noise is missing,

Re: smart fans

2021-08-23 Thread David Christensen
On 8/23/21 1:44 PM, Thomas Schmitt wrote: Hi, Emanuel Berg wrote: [...] maybe it isn't the case fans or the CPU cooling tower fans that make the sound anyway! If nothing else helps to find the culprit, then consider to unplug all case fans to prove that it's not them. A bit more adventurous

Re: smart fans

2021-08-23 Thread David Christensen
On 8/23/21 12:36 PM, to...@tuxteam.de wrote: On Mon, Aug 23, 2021 at 12:20:34PM -0700, David Christensen wrote: [...] Thank you. Do you know where there is information that explains how a BLDC computer fan motor responds to variable supply voltage? Not specifically for computer fans

Re: smart fans

2021-08-23 Thread David Christensen
On 8/23/21 11:41 AM, Emanuel Berg wrote: David Christensen wrote: - Set the Linux CPU governor to "powersave". Nothing happens when I do that. Try the QFan "Silent" profile Same. What about GPU fan(s)? Power supply fan(s)? What about HDD's? Yeah, I thought ab

Re: smart fans

2021-08-23 Thread David Christensen
On 8/23/21 1:03 AM, to...@tuxteam.de wrote: On Sun, Aug 22, 2021 at 02:02:45PM -0700, David Christensen wrote: [...] What is "BLDC"? Brushless (electric) DC motor [1]. Back Then (TM ;-), to turn an electric motor around you had to switch around the magnetic field in the coils

Re: smart fans

2021-08-22 Thread David Christensen
On 8/22/21 5:51 PM, Emanuel Berg wrote: OK, I did check out the BIOS/UEFI/Setup and all five fans can be configured individually. There are five options. I spoke to soon, there seems to be only one set of options for the CPU fan, so I guess the CPU_OPT and CPU_FAN are the same in terms of

Re: smart fans

2021-08-22 Thread David Christensen
On 8/22/21 4:57 PM, Emanuel Berg wrote: David Christensen wrote: I would figure out what Setup can do with the fans before messing with the Linux CPU governor. Install software to display temperatures, to display fan speeds, and to put the CPU under load. Temperatures of the CPU and GPU I

Re: smart fans

2021-08-22 Thread David Christensen
On 8/22/21 2:40 PM, Emanuel Berg wrote: David Christensen wrote: Some of my other machines offer additional governors -- "powersave" and "userspace". Run "cpufreq-info -g" to see what Debian offers on your motherboard. I did install and did set it to differe

Re: smart fans

2021-08-22 Thread David Christensen
On 8/22/21 2:26 PM, Emanuel Berg wrote: didier gaumet wrote: I would think that pwmconfig complains that it finds 3-pins fans set up to PWM mode (4-pins required) Your UEFI propose either to setup your fans globally or individually and I think that by default the setup is global. This would

Re: smart fans

2021-08-22 Thread David Christensen
On 8/22/21 1:15 PM, Emanuel Berg wrote: fanfront low be quiet! Shadow Wings 2 140 mm 3-pin[1] front high be quiet! Shadow Wings 2 140 mm 4-pin CPU cooling tower be quiet! Pure Wings 2120 mm 4-pin (2)[2] rear Corsair

Re: smart fans

2021-08-22 Thread David Christensen
On 8/22/21 6:41 AM, to...@tuxteam.de wrote: On Sun, Aug 22, 2021 at 09:03:51AM -0400, Polyna-Maude Racicot-Summerside wrote: [...] Like I already wrote, modifying voltage doesn't change speed of a motor (fan). I disagree. The thing poses [1] as a DC motor (2 pins power, one tacho). [1]

Re: smart fans

2021-08-22 Thread David Christensen
On 8/22/21 1:39 AM, Emanuel Berg wrote: 4-pin fans wouldn't be possible because of the motherboard sockets, I think, which are also 3-pin. The motherboard user's manual says all of the fan connectors are 4-pin. On 8/22/21 6:03 AM, Polyna-Maude Racicot-Summerside wrote: > Like I already

Re: smart fans

2021-08-22 Thread David Christensen
On 8/22/21 12:56 AM, Emanuel Berg wrote: David Christensen wrote: If you throttle your CPU, it will not generate as much heat: https://wiki.debian.org/CpuFrequencyScaling You mean permanently or when I'm not using the computer? Install the Debian package 'cpufrequtils'. Use

Re: smart fans

2021-08-22 Thread David Christensen
On 8/21/21 4:53 PM, Emanuel Berg wrote: o/ Is there a way to have "smart fans" that only go as fast as needed? Or, lacking that, is there a way to manually switch them off when one isn't using the computer? I do $ sudo hibernate -v 0 but that seems to kill the Internet connection as well

Re: nvme SSD and poor performance

2021-08-20 Thread David Christensen
On 8/17/21 2:54 AM, Pierre Willaime wrote: > I have a nvme SSD (CAZ-82512-Q11 NVMe LITEON 512GB) on debian stable > (bulleye now). > > For a long time, I suffer poor I/O performances which slow down a lot of > tasks (apt upgrade when unpacking for example). On 8/20/21 1:50 AM, Pierre Willaime

Re: nvme SSD and poor performance

2021-08-17 Thread David Christensen
On 8/17/21 2:54 AM, Pierre Willaime wrote: > Hi, > > I have a nvme SSD (CAZ-82512-Q11 NVMe LITEON 512GB) on debian stable > (bulleye now). > > For a long time, I suffer poor I/O performances which slow down a lot of > tasks (apt upgrade when unpacking for example). > > I am now trying to fix this

Re: Still on stretch, getting ready for bullseye

2021-08-17 Thread David Christensen
On 8/17/21 4:24 AM, Gene Heskett wrote: Greetings all; I just installed another sata controller and 4 1 T-byte Samsung SSD's. The controller claims to be a 15 port port expander, but only 6 are bonded out, and collectively show up at ata7 in dmesg. They show up as /dev/sde/f/g/h but have not

Re: Can't boot following re-install to LVM on LUKS [was: can't login via gdm]

2021-08-11 Thread David Christensen
On 8/11/21 6:45 AM, Morgan Read wrote: Hi List, Since my cry for (fairly minor) help here: https://lists.debian.org/debian-user/2021/08/msg00461.html I think I've dug myself into a bit of a deep hole. After having overcome a fairly fundamental bug with calamares as described here:

Re: Disk for a small server

2021-08-11 Thread David Christensen
On 8/11/21 7:00 AM, Celejar wrote: I myself have no personal experience or deep understanding of the issues, but the experts do not accept your position that [non-ECC memory combined with operating system storage stack integrity checking] is higher risk than [ECC memory combined with operating

Re: Disk for a small server

2021-08-11 Thread David Christensen
On 8/10/21 7:51 PM, Celejar wrote: On Tue, 10 Aug 2021 17:35:32 -0700 David Christensen wrote: On 8/10/21 12:56 PM, Dan Ritter wrote: David Christensen wrote: On 8/10/21 8:04 AM, Leandro Noferini wrote: https://wiki.debian.org/ZFS ... - ECC memory is safer than non-ECC memory

Re: Disk for a small server

2021-08-10 Thread David Christensen
On 8/10/21 12:52 PM, to...@tuxteam.de wrote: On Tue, Aug 10, 2021 at 12:48:24PM -0700, David Christensen wrote: On 8/10/21 8:04 AM, Leandro Noferini wrote: Ciao a tutti, I have a little server (debian stable on raspberry) used by my family and a little set of people (~10) with services like

Re: Disk for a small server

2021-08-10 Thread David Christensen
On 8/10/21 12:56 PM, Dan Ritter wrote: David Christensen wrote: On 8/10/21 8:04 AM, Leandro Noferini wrote: https://wiki.debian.org/ZFS But: - ZFS wants lots of memory. The rule of thumb is 5 GB of memory for every 1 TB of storage. This is a myth. Oracle says [1]: "... for

Re: Disk for a small server

2021-08-10 Thread David Christensen
On 8/10/21 8:04 AM, Leandro Noferini wrote: Ciao a tutti, I have a little server (debian stable on raspberry) used by my family and a little set of people (~10) with services like nextcloud (~100GB growing) and some more. This server has an external disk for the data, disk that is becoming too

Re: Updating kernels impossible when /boot is getting full

2021-08-03 Thread David Christensen
On 8/1/21 12:55 PM, Kamil Jońca wrote: David Christensen writes: [...] A 500 GB boot partition would be enough for several kernels, etc., on Debian 10 amd64. OP wrote about 500 _M_ bytes (0.5G), Please see: > On 8/1/21 3:29 PM, David Christensen wrote: >> I see a typo i

Re: Updating kernels impossible when /boot is getting full

2021-08-02 Thread David Christensen
On 8/2/21 12:47 PM, Greg Wooledge wrote: On Mon, Aug 02, 2021 at 12:43:27PM -0700, David Christensen wrote: I'd rather not install dracut. Me too. So why not use lsinitramfs -l ? Why keep reinventing the wheel? unicorn:~$ lsinitramfs -l /boot/initrd.img-5.10.0-8-amd64 | head -12 drwxr-xr-x

Re: Updating kernels impossible when /boot is getting full

2021-08-02 Thread David Christensen
On 8/2/21 11:29 AM, Greg Wooledge wrote: On Mon, Aug 02, 2021 at 11:11:11AM -0700, David Christensen wrote: Please post your console session showing how you created initrd.img-5.10.0-8-amd64.txt.gz. I didn't. It was created automatically when I installed dracut-core. Prior

Re: Updating kernels impossible when /boot is getting full

2021-08-02 Thread David Christensen
On 8/1/21 3:51 PM, Greg Wooledge wrote: On Sun, Aug 01, 2021 at 03:29:07PM -0700, David Christensen wrote: 2021-08-01 13:52:37 root@dipsy ~ # gunzip -c /boot/initrd.img-4.19.0-17-amd64 | cpio -i -d -H newc --no-absolute-filenames 246741 blocks That may not extract the full content

Re: Updating kernels impossible when /boot is getting full

2021-08-01 Thread David Christensen
On 8/1/21 1:00 PM, Greg Wooledge wrote: On Sun, Aug 01, 2021 at 12:45:27PM -0700, David Christensen wrote: On 7/31/21 9:20 PM, Ilkka Huotari wrote: -rw-r--r-- 1 root root 153M heinä 10 14:22 initrd.img-5.11.0-22-generic -rw-r--r-- 1 root root 151M heinä 23 13:13 initrd.img-5.11.0-25

Re: Updating kernels impossible when /boot is getting full

2021-08-01 Thread David Christensen
On 7/31/21 9:20 PM, Ilkka Huotari wrote: Hi, I'm using Ubuntu 21. My /boot partition size is 500M and it's getting full: /dev/sda1 446M 352M 61M 86% /boot What's taking space are mainly these: -rw-r--r-- 1 root root 153M heinä 10 14:22 initrd.img-5.11.0-22-generic

Re: how best to do

2021-07-28 Thread David Christensen
On 7/28/21 6:44 AM, Gene Heskett wrote: Greetings all; This, my main machine that backs up 5 others here, but does that with drives not involved with daily stuffs, and of course I'm gradually replacing spinning rust with SSD's. I've been dragging my feet on updating from stretch to buster,

Re: help with dpkg!

2021-07-18 Thread David Christensen
On 7/18/21 4:53 PM, w...@mgssub.com wrote: When dpkg tries to build a new initrd my system crashes. how can I stop dpkg from trying to build a new initrd so I can do some other apt things to fix my system? Many TIA!!! Dennis Can you manually build a new initrd? Why does dpkg try to

Re: RAID-1 and disk I/O

2021-07-18 Thread David Christensen
On 7/18/21 2:29 PM, Urs Thuermann wrote: David Christensen writes: You should consider upgrading to Debian 10 -- more people run that and you will get better support. It's on my TODO list. As well as upgrading the very old hardware. Currently, it's a Gigabyte P35-DS3L with an Intel

Re: RAID-1 and disk I/O

2021-07-18 Thread David Christensen
On 7/18/21 2:16 AM, Reco wrote: Hi. On Sat, Jul 17, 2021 at 02:03:15PM -0700, David Christensen wrote: But much more noticable is the difference of data reads of the two disks, i.e. 55 GB and 27 GB, i.e. roughly twice as much data is read from /dev/sdb compared to /dev/sda. Trying

Re: RAID-1 and disk I/O

2021-07-18 Thread David Christensen
On 7/17/21 6:30 PM, David wrote: On Sun, 18 Jul 2021 at 07:03, David Christensen wrote: On 7/17/21 5:34 AM, Urs Thuermann wrote: On my server running Debian stretch, the storage setup is as follows: Two identical SATA disks with 1 partition on each drive spanning the whole drive, i.e. /dev

Re: Free LAMP VPS hosting

2021-07-18 Thread David Christensen
On 7/18/21 12:07 AM, john doe wrote: Debians, I have a LAMP configured at home but now I would like to make this LAMP publickly available to the world. As it was suggested on this list, it is not reasonable to make my LAMP available online (security wise/no commercial link). Looking online

Re: RAID-1 and disk I/O

2021-07-17 Thread David Christensen
On 7/17/21 5:34 AM, Urs Thuermann wrote: On my server running Debian stretch, You should consider upgrading to Debian 10 -- more people run that and you will get better support. I migrated to FreeBSD. the storage setup is as follows: Two identical SATA disks with 1 partition on each

Re: Safer ways to write an ISO onto USB stick [was Re: Repair partition after dd]

2021-07-14 Thread David Christensen
On 7/14/21 3:47 AM, Thomas Schmitt wrote: Hi, Brian wrote: It would be nice to avoid having to have root privileges in order to do 'cp /dev/sdX' with a USB stick. A udev rule under /etc/udev/rules.d/ could be a solution: SUBSYSTEM=="block", ATTRS{removable}=="1", GROUP="floppy" This

Re: Moving dual boot Win10 & Debian 10 system from Legacy to UEFI

2021-07-04 Thread David Christensen
On 7/4/21 4:22 PM, Juan R. de Silva wrote: Hi folks, I dual boot Debian 10 with Windows 10 from MBR in Legacy mode on my 6 years old Dell M4800 workstation. The BIOS supports both Legacy and UEFI modes. With upcoming Windows 11 I am compelled to switch to UEFI mode. Dell Precision M4800

Re: Creation of empty files [was: Useful use of dd]

2021-07-03 Thread David Christensen
On 7/3/21 6:44 AM, Michael Stone wrote: On Fri, Jul 02, 2021 at 02:30:50PM -0700, David Christensen wrote: 2021-07-02 14:24:30 dpchrist@dipsy ~/sandbox/dd $ du --bytes truncate-sparse 5242880    truncate-sparse I expected sparse files, but du(1) does not indicate such (?). You used --bytes

Re: Creation of empty files [was: Useful use of dd]

2021-07-02 Thread David Christensen
On 7/2/21 2:30 PM, David Christensen wrote: I expected sparse files, but du(1) does not indicate such (?). Comments? RTFM ls(1) and the '-s' and '--block-size' options. David

Re: Useful use of dd

2021-07-02 Thread David Christensen
On 7/2/21 4:25 AM, Teemu Likonen wrote: * 2021-07-02 12:52:53+0200, Thomas Schmitt wrote: Teemu Likonen wrote: For this new subject I will add another use: quickly create empty file of specific size, for example 5 * 1024 bytes: $ dd of=empty obs=1024 seek=5 count=0 Not to forget

Creation of empty files [was: Useful use of dd]

2021-07-02 Thread David Christensen
On 7/2/21 11:51 AM, Kushal Kumaran wrote: On Fri, Jul 02 2021 at 01:26:23 PM, Teemu Likonen wrote: For this new subject I will add another use: quickly create empty file of specific size, for example 5 * 1024 bytes: $ dd of=empty obs=1024 seek=5 count=0 2021-07-02 14:20:47

Useless use of shell pipelines [was: Useful use of dd]

2021-07-02 Thread David Christensen
On 7/2/21 12:49 AM, to...@tuxteam.de wrote: Now to another pet peeve of mine: useless use of grep: grep | sed -e 's/bla/foo/' ... Perhaps the underlying issue is useless use of shell pipelines ("The Unix Way"): 2021-07-02 12:44:43 dpchrist@dipsy ~/sandbox/perl $ cat

Re: Useless use of "dd"

2021-07-02 Thread David Christensen
On 7/1/21 10:40 PM, Teemu Likonen wrote: * 2021-07-01 20:43:09-0700, David Christensen wrote: To "take an image", the script invokes dd(1) and pipes the output to gzip(1), copying raw device octets to a file. To "restore an image", the process is reversed. Sounds like

Re: Whole Disk Encryption + SSD

2021-07-02 Thread David Christensen
On 7/2/21 8:02 AM, David Wright wrote: On Thu 01 Jul 2021 at 20:43:09 (-0700), David Christensen wrote: On 7/1/21 7:55 PM, David Wright wrote: On Mon 28 Jun 2021 at 13:36:35 (-0700), David Christensen wrote: I do not set the 'discard' (trim) option in fstab(5). If and when I want to erase

Re: Whole Disk Encryption + SSD

2021-07-01 Thread David Christensen
On 7/1/21 7:55 PM, David Wright wrote: On Mon 28 Jun 2021 at 13:36:35 (-0700), David Christensen wrote: I do not set the 'discard' (trim) option in fstab(5). If and when I want to erase unused blocks (such as before taking an image), I use fstrim(8). Can you elaborate on a couple of things

Re: Whole Disk Encryption + SSD

2021-06-29 Thread David Christensen
On 6/29/21 5:02 AM, piorunz wrote: I don't trust SED, after listening to Steve Gibson analysis on state of this feature. Audio podcast: http://media.GRC.com/sn/SN-689.mp3 Transcript: https://www.grc.com/sn/sn-689.pdf His findings were sourced, among other things, on work of security

Re: Whole Disk Encryption + SSD

2021-06-29 Thread David Christensen
On 6/29/21 12:47 AM, to...@tuxteam.de wrote: On Mon, Jun 28, 2021 at 07:56:47PM -0400, Stefan Monnier wrote: Along with SED, I suggest that you also implement Secure Boot. Can someone give me pointers to actually known attacks (not hypothetical ones, which I can invent myself without much

Re: Whole Disk Encryption + SSD

2021-06-28 Thread David Christensen
On 6/28/21 1:36 PM, David Christensen wrote: (Dell factory default for drives is 'RAID'; 'ACPI' may be required). Correction: AHCI. David

Re: Whole Disk Encryption + SSD

2021-06-28 Thread David Christensen
On 6/28/21 7:52 AM, piorunz wrote: Hi all, I've got about 5 years old HP laptop with SSD SATA drive 240 GB. Debian Bullseye will be installed on it once it's released, as my secondary computer to use. I have question regarding whole disk encryption. What technology should I use, to have

Re: Wiping an unencrypted SSD in preparation for encryption

2021-06-12 Thread David Christensen
On 6/11/21 7:59 AM, Polyna-Maude Racicot-Summerside wrote: Hi, On 2021-06-11 12:31 a.m., David Wright wrote: I'm about to install buster or bullseye on a newly acquired laptop with an SSD (a first for me). I'm intending to clean (zero or randomise) the entire drive with dd before I start, and

Re: Wiping an unencrypted SSD in preparation for encryption

2021-06-12 Thread David Christensen
On 6/11/21 6:01 AM, Reco wrote: On Fri, Jun 11, 2021 at 05:55:02AM -0700, David Christensen wrote: On 6/10/21 11:49 PM, Reco wrote: On Thu, Jun 10, 2021 at 11:43:12PM -0700, David Christensen wrote: I don't bother with the 'discard' option in /etc/fstab, but perhaps I should. The fstab(5

Re: Wiping an unencrypted SSD in preparation for encryption

2021-06-11 Thread David Christensen
On 6/10/21 11:49 PM, Reco wrote: Hi. On Thu, Jun 10, 2021 at 11:43:12PM -0700, David Christensen wrote: I don't bother with the 'discard' option in /etc/fstab, but perhaps I should. The fstab(5) and mount(8) manual pages are unclear if 'discard' applies to swap or ext4. swapon(8

Re: Wiping an unencrypted SSD in preparation for encryption

2021-06-11 Thread David Christensen
On 6/10/21 9:31 PM, David Wright wrote: I'm about to install buster or bullseye on a newly acquired laptop with an SSD (a first for me). I'm intending to clean (zero or randomise) the entire drive with dd before I start, and am interested in any pitfalls with that. I will also encrypt the new

Re: Weird WiFi problem

2021-05-23 Thread David Christensen
On 5/23/21 4:55 PM, Juan R. de Silva wrote: Help needed from somebody with the better networking knowledge than mine. Debian Buster on Dell M4800 Mobile Workstation, Intel Corporation Wireless 7260 (rev bb) WiFi adapter. The ISP modem offers 2 WiFi bands: 2.4G & 5G. The system connects

Re: Nvidia Optimus, Debian 10, and Firefox ESR crashes

2021-05-10 Thread David Christensen
On 1/1/21 3:51 PM, David Christensen wrote: debian-users: I have a Dell Latitude E6520 with Nvidia Optimus graphics ... After a random amount of time (minutes to hours) of watching videos on YouTube ... The system will crash ... Recent upgrades seem to have fixed the problem: 2021

Re: new user MacBook

2021-04-18 Thread David Christensen
On 4/18/21 1:25 AM, Thanos Katsiolis wrote: Thank you for your responses, you have been very helpful. YW. :-) My intention was to have both OSs installed and choose which one to boot. From your answers I understand that it may not be safe for both OSs, so the best solution is to have a

Re: new user MacBook

2021-04-17 Thread David Christensen
On 4/17/21 8:39 AM, Thanos Katsiolis wrote: Hello, I am a new user who would like to try Debian. I have a MacBook Pro (Early 11) which runs Mac OS, to which I want to also install Debian. Will I have any issues installing Debian regarding hardware? I would also appreciate it if you have any

Re: upgrading firefox-esr from 78.6 to 78.9 results in non-working firefox

2021-04-10 Thread David Christensen
On 4/10/21 4:59 AM, Eric S Fraga wrote: ... I did 'apt update' and 'apt install firefox-esr' to upgrade from version 78.6 to version 78.9. I have not figured out the difference between apt(8) and apt-get(8). It looks like the former uses the latter as a back-end (?). I use apt-get(8).

Re: Temporary failure in name resolution

2021-04-03 Thread David Christensen
On 4/3/21 9:05 AM, Dan Norton wrote: On 3/31/21 1:33 PM, David Christensen wrote: "$ host -v -t A www.debian.org 192.168.1.254 Dan -- did you run the above test? This may help isolate if the problem is Debian 10 or your AT gateway." The five lines immediately above are i

Re: Temporary failure in name resolution

2021-04-03 Thread David Christensen
On 3/31/21 1:33 PM, David Christensen wrote: $ host -v -t A www.debian.org 192.168.1.254 Dan -- did you run the above test? This may help isolate if the problem is Debian 10 or your AT gateway. David

Re: Temporary failure in name resolution

2021-03-31 Thread David Christensen
On 3/31/21 3:28 PM, Dan Norton wrote: David Christensen wrote on Wed, 31 Mar 2021 13:49:56 -0700: I would do 'apt-get update' and 'apt-get upgrade' ('autoremove', 'clean', etc.). Once apt-get(8) is done, I would revert the changes to /etc/resolv.conf and see if name resolution breaks or remains

Re: Temporary failure in name resolution

2021-03-31 Thread David Christensen
On 3/31/21 1:58 PM, Greg Wooledge wrote: On Wed, Mar 31, 2021 at 01:43:23PM -0700, David Christensen wrote: Is there technical documentation that explains how name resolution works in Linux 4.19.0-16-amd64 and/or Debian 10? (e.g. design and implementation, userland tools, etc..) It's

Re: Temporary failure in name resolution

2021-03-31 Thread David Christensen
On 3/31/21 11:58 AM, Dan Norton wrote: Thank you, Felix. This post is coming from Debian with names resolved: #1 SMP Debian 4.19.181-1 (2021-03-19) Also resolv.conf is un-messed with: $ cat /etc/resolv.conf domain attlocal.net search attlocal.net nameserver 1.1.1.1 nameserver 1.0.0.1 nameserver

Re: Temporary failure in name resolution

2021-03-31 Thread David Christensen
On 3/31/21 10:37 AM, Greg Wooledge wrote: As of right now, we have at least two people posting to debian-user about DNS failures involving what appears to be their home router's forwarding DNS service, and Debian 10.9. Switching the nameserver lines in resolv.conf to something *other than* the

Re: Temporary failure in name resolution

2021-03-31 Thread David Christensen
I have reorganized the content below to improve comprehension. On 3/31/21 9:46 AM, Dan Norton wrote: Thanks to all who responded. > Thanks for your detailed help. Let me know if I can dig out more. YW. We are making progress. See below. Have not changed any of the gateway settings that

Re: Temporary failure in name resolution

2021-03-31 Thread David Christensen
On 3/30/21 7:21 PM, Dan Norton wrote: After the 10.9 upgrade, name resolution is not working for me. Does anyone else see this? My desktop is a wifi server for laptop access using windows. That works OK but the server, attached by ethernet to the DSL modem does not get names resolved since

Re: Running debian on WSL (windows-system-for-linux)

2021-03-26 Thread David Christensen
On 3/26/21 12:37 PM, David Christensen wrote: AIUI ... there is no such thing as installing another Linux distribution on top of WSL. Right and wrong -- you can install a WSL 2 version of Debian GNU/Linux into WSL 2 via the Microsoft Store: https://docs.microsoft.com/en-us/windows/wsl

Re: Running debian on WSL (windows-system-for-linux)

2021-03-26 Thread David Christensen
On 3/25/21 8:02 PM, Dan Hitt wrote: Does anybody have any experience running debian on a WSL (windows-system-for-linux) machine? I need to get a machine for family use, but i would also like to be able to also use it myself. So i would like to be able to ssh in, back up files into it, and do

Re: Subject: Re: Slow connections - DNS problems?

2021-03-24 Thread David Christensen
On 3/24/21 2:44 PM, Charlie Gibbs wrote: $ cat /etc/debian_version 10.8 Okay -- that is current. $ uname -a Linux cjglap2 4.19.0-14-amd64 #1 SMP Debian 4.19.171-2 (2021-01-30) x86_64 GNU/Linux Okay -- that is current. $ nmcli g status STATE  CONNECTIVITY  WIFI-HW  WIFI

Re: Slow connections - DNS problems?

2021-03-24 Thread David Christensen
On 3/23/21 10:32 PM, Charlie Gibbs wrote: I read Usenet (including this mailing list via the newsgroup linux.debian.user) on my laptop. so I can keep up from anywhere. It works well, but at home it takes 20 or 30 seconds to connect to my NNTP server, newsguy.com.  If I take my laptop to the

Re: Debian Stable Updates Announcement SUA 197-1

2021-03-23 Thread David Christensen
On 3/23/21 12:31 PM, Andrew M.A. Cater wrote: On Tue, Mar 23, 2021 at 10:40:01AM -0700, David Christensen wrote: I use Stretch for my daily driver laptop (Dell Latitude E6520) and UniFi Controller VPS. ... I need to migrate the daily driver to Buster, but Buster does not like the Optimus

Re: Debian Stable Updates Announcement SUA 197-1

2021-03-23 Thread David Christensen
On 3/23/21 9:44 AM, David Wright wrote: On Tue 23 Mar 2021 at 07:52:52 (-0400), The Wanderer wrote: On 2021-03-23 at 07:43, Greg Wooledge wrote: I think the request was really "Please tell us how to use this buster-proposed-updates thing, which I've never heard of before." Actually I

Re: Debian Stable Updates Announcement SUA 197-1

2021-03-23 Thread David Christensen
On 3/23/21 4:43 AM, Greg Wooledge wrote: On Mon, Mar 22, 2021 at 10:34:12PM -0500, David Wright wrote: On Mon 22 Mar 2021 at 17:26:14 (-0700), David Christensen wrote: On 3/22/21 5:03 PM, Keith Wyatt wrote: As o[f] now it will include the following bug fixes. They can be found in "b

Re: Debian Stable Updates Announcement SUA 197-1

2021-03-23 Thread David Christensen
On 3/22/21 8:34 PM, David Wright wrote: On Mon 22 Mar 2021 at 17:26:14 (-0700), David Christensen wrote: On 3/22/21 5:03 PM, Keith Wyatt wrote: As o[f] now it will include the following bug fixes. They can be found in "buster- proposed-updates", which is carried by all offici

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