** Description changed:
- I have been using Lubuntu for several years, and in my experience
- PCManFM is persistently unstable and subject to regular random crashes.
- Typically, after using PCManFM for a while it freezes when a folder is
- selected (mouse left-click) and crashes. Since upgrading
@EnduranceCode, you would want to look in
~/.cache/lxsession/LXDE/run.log for something similar to:
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been
called
[xcb] Aborting, sorry about that.
pcmanfm: xcb_io.c:259:
** Changed in: pcmanfm (Ubuntu)
Status: Confirmed => Triaged
** Changed in: pcmanfm (Ubuntu)
Importance: Undecided => Critical
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@wxl: Walter Lapchynski,
Can you please tell me what I should look for in /var/log/syslog or in any
other file? I woul like to help but I'm not sure how to do it.
Thank you
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I have the same problem with PCManFM, it randomly crashes/freezes all
the time. It started happening with a fresh install of Lubuntu 18.04.01
in a custom made desktop and in a Dell Latitude D820 Laptop. Last week
I've downloaded the latest version of Lubuntu 18.04 and made a new fresh
install in th
SpaceFM GTK3 indeed works without hanging. Moreover, there is finally a
report about the rarer Leafpad crash: the error in the LXDE log is
**identical** to pcmanfm error.
This suggests that PCManFM (or Leafpad) are not the cause but are
themselves victims of an upstream problem (with GTK2 probably
Thank you, @Walter for the excellent advice! SpaceFM GTK3 works well: 3
days so far without any freezes!
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Title:
PCManFM crashes frequently on L
Walter: occasionally even Leafpad would crash, although I do not have a
log of those rare events. But now I have another GTK file manager that
locks-up on me in similar way. I've been trying the OpenBox variant of
Porteus which comes with SpaceFM. We've pulled out a latest alpha of
SpaceFM. It cras
Hello,
I have the same problem. When PCManFM is used, it crashes after
approximately one hour.
The file ~/.cache/lxsession/LXDE/run.log contains:
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been
called
[xcb] Abor
Just the same:
(pcmanfm:1034): GLib-CRITICAL **: 22:26:36.391: Source ID 45146 was not found
when attempting to remove it
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been
called
[xcb] Aborting, sorry about that.
p
Can EVERYONE that has the problem confirm something similar to the error:
pcmanfm: xcb_io.c:259: poll_for_event: Assertion
`!xcb_xlib_threads_sequence_lost' failed.
If so we have an upstream bug:
https://sourceforge.net/p/pcmanfm/bugs/1089/
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I have same problem with all gtk2 applications
https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/1808710
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Title:
PCManFM crashes frequently
It crashes regardless the version of menu-cache and the error message in
the "~/.cache/lxsession/LXDE/run.log" indicates a multi-threading bug:
pcmanfm
[xcb] Unknown sequence number while processing queue
[xcb] Most likely this is a multi-threaded client and XInitThreads has not been
called
[xcb
The version 1.0.2 (1.0.2-2) is for Arch.
For the Ubuntu the version after official is 1.0.1 (1.0.1-1)
https://launchpad.net/ubuntu/+source/menu-cache
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Dear cgarciang,
Not libmenu-cache but menu-cache is the correct package name.
Thw downgrade menu-cache package
https://sourceforge.net/projects/lxde/files/menu-cache/1.0/ is the only
solution (temporarily).
The version 1.0.2 is more stable than the version 1.1.0
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Sorry, but did I understand that a temporary solution is to downgrade
libmenu-cache to version 1.0.2-2?
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Title:
PCManFM crashes frequently on Lu
Dear scmar1+,
Thank you very much for finding the solution, this is a very important
information, which solves a really annoying problem.
Thanks again,
Best wishes and I wish You and all other guys a Blessed and Happy New Year!
Janos
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The menu-cache 1.1.0-1 causes pcmanfm to crashes suddenly and randomly
With degradation of menu-cache from the version 1.1.0-1 to the version 1.0.2-2,
there is a temporary solution, until the menu-cache's bug is corrected.
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Just another FYI. PCManFM crashed again. I was right clicking to create
a new folder. When I typed the folder name and clicked "Ok," the desktop
disappeared, and came back (I didn't have to start PCManFM from the
command line, like I have had to do in the past). But, no new folder was
created.
So,
Dear MarkF,
I used GIMP 2.10 from kesselgulasch's PPA since I experienced continuous crash
of 2.8 installed normally from lubuntu packages. Absolutely no crash since
then, but I could not find any connection between PcManFM 1.2.5 crash and GIMP
crash. There are no shared packages between the tw
FYI: PCManFM hasn't crashed since I uninstalled the flatpack-installed
version of GIMP 2.10.8 (and installed a PPA served apt-get package). I
did that thinking it might fix my GIMP crashes which began with 2.10.x
(when I installed Lubuntu 18.04). It did fix that. But, I haven't had a
PCManFM crash
@Janos, I want to confirm that your experience with GIMP is backwards
from mine. I ran GIMP 2.8 the whole time I was on the older Lubuntu
(described in my first comment, 3 comments above) which PCManFM crashed
all the time. GIMP was fine for me then. When I installed Lubuntu 18.04
(fresh install) a
Dear MarkF,
I confirm your GIMP crashing problem, but I have this problem using GIMP 2.8. I
got crashes nearly immediately.
After installing GIMP 2.10 from kesselgulasch's PPA there was problem no more.
I could work with GIMP 2.10 without any problem, and I really liked it, there
was a great imp
As mentioned in the previous msg, I am stracing PCManFM (1.2.5) and it
finally crashed. Attached are the last 12k lines from strace, about 25
seconds. I CTRL-break'ed out of it within 4-10 seconds. I was a little
slow, being in the middle of the previous message, trying shift my
thoughts to what th
I'm also having this problem. I reported it on Lubuntu-Users mailing
list.[1] Walter referred me to this bug report. I am running strace[2].
I am pretty darn sure this began with 17.04.[3]
I mentioned on the Lubuntu mailing list that I had developed a "feeling"
(after living with it for almost a y
New thought: do these problems leave .crash files in /var/crash? If so, you
might want to try apport-retrace:
https://wiki.ubuntu.com/DebuggingProgramCrash#Using_apport-retrace
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Janos, this is a total aside and should be something best discussed on
the Lubuntu mailing list (lubuntu-us...@lists.ubuntu.com) but I will
mention that PCMan himself is no longer involved in the development of
GTK PCManFM, although he is in the Qt version. The future is bright for
LXQt but much mo
Dear Patrick,
I can confirm Your full story about crashing PcManFM just point-by-pont. Since
using PcManFM 1.3.0 with LibFM ver. 1.2.5 crashes became not as frequent as it
had been before. But it is not a solution.
I installed Caja file manager (oroginally used by Ubuntu Mate), which causes no
Just wanted to opt in as I'm also affected. I'm running Lubuntu 18.04.1
on a Lenovo Thinkpad X250 in a 2 monitor setup.
I tried, like Janus mentioned, to install pcmanfm 1.3.0 from the deb file
provided.
My LibFM version is unchanged at 1.2.5.
Sadly I have to report that just updating pcmanfm do
First some general advice. Deb packages are ALWAYS available for
released software versions, but they're under the source package in
Launchpad. Sometimes the source package and the binary (deb) package
have the same name. On the other hand, sometimes a lot of packages are
built from a single source
Hi Walter,
I tried to install Thunar 1.8.1 as you asked me, but not Thunar 1.8.1, nor
libthunarx-3-0_1.8.1 can be installed on Lubuntu Bionic because of dependency
problems. Thunar needs Thunar-data 1.8.1, libtunarx needs libxfconf 4.6.0 or
newer which I could not find... and hopefully doesn't
Hi Walter,
According to my previous message in which I mentioned the mixed usage of
PcManFM, I have a question if it is possible to use LibFM 1.3.2 with Lubuntu
Bionic or it containing Cosmic specific dependencies or something like that.
Other question if it is possible to get libFM 1.3.2 in an
Hi Mike,
I found that PcManFM has a new version 1.3.0 for Cosmic, and it has as a
necessary part LibFM 1.3.2.
Since I found installable .deb file of PcManFM itself in the Launcpad, and I
found LibFM for it nowhere as an installable .deb file, first I tried only the
PcManFM deb file to install t
tl;dr enormous diff XD
Anyways I guess that kills my theory since both of those are Bionic
versions. And you say you have the old libfm which utterly shocks me.
Janos, can you please do like you did with pcmanfm and install the Cosmic
version of thunar and let me know if it also fails to crash?
Looks like that is just one part of it, not sure how to edit my post but here
is more info:
https://blog.lxde.org/2018/04/23/libfm-pcmanfm-1-3-0-released/
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I also found this:
https://git.lxde.org/gitweb/?p=lxde/libfm.git;a=summary
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Title:
PCManFM crashes frequently on Lubuntu 18.04
To manage notifi
Hi! I am not a linux expert but I'm having the crashes with PCManFM
too, all the time. I rarely, if ever had them on Lubuntu 16.04.
RE: "I'm really curious what is the difference between 1.2.5 and 1.3.0?"
Here is the diff on the launchpad page:
http://launchpadlibrarian.net/368644982/pcmanfm_1.
Hello,
Answering Simon's question: No, on 16.04 and 14.04 everything is OK
The problem started (as it is mentioned by "prrvchr" up above at message #3)
from Lubuntu release 17.10, which I can not confirm, since I never used 17.10.
I use mostly the LTS releases.
But I can strongly confirm th
I have a theory: this is a problem in gvfs or, less likely, glib (but
not libc, which doesn't change) since they both change versions and are
requirements of both Thunar and PCManFM. To test this theory, some
questions:
1. Can we confirm that Thunar doesn't have the problem in the Cosmic version?
Hello,
Does this happen on Lubuntu 16.04 as well? What about 14.04?
Once we have this knowledge and once I can reproduce it, I can go about
Git bisecting the commit which caused this, so I can then analyze the
changes between the 18.04 copy and the 18.10 copy (if that does indeed
work) and find t
** Changed in: pcmanfm (Ubuntu)
Status: Incomplete => Confirmed
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Title:
PCManFM crashes frequently on Lubuntu 18.04
To manage notificati
Sorry, the links I gave (in previous message) are bad.
Now, the good ones again.
First is for launchpad.net:
https://launchpad.net/ubuntu/cosmic/amd64/pcmanfm/1.3.0-1
And the second one is for the download link (amd64 achitecture):
http://launchpadlibrarian.net/368631138/pcmanfm_1.3.0-1_amd64.
PCManFM 1.3.0.1 on Lubuntu 18.04.1 LTS
Thinking a big, I looked for PCManFM 1.3.0.-1 at launchapd.net:
https://launchpad.net/ubuntu/cosmic/arm64/pcmanfm/1.3.0-1
and downloaded the .deb file below from the "Downloadable files" section
here:
http://launchpadlibrarian.net/368633026/pcmanfm_1.3.0-1
Hi Ben,
Recently I had problem with Samba share, but with a little workaround I managed
to solve the problem.
Since Samba is also modified in Ubuntu 18.04 it is needed to look for your
problem. Using Caja I have no problem like I had with PcManFM, but no mention
it is a deeper problem because Th
Thanks for the information! I tried to copy via terminal from my samba
share and this also crashed my mount point of the mp3fs on the share the
same way as with using PCmanFM. I am not an expert, but maybe the
problem is not related to PCmanFM but more deeply in the kernel?
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The topic seems to be a bit abandoned suggesting all is good as it is
not.
A little workaround since PCManFM handles the desktop well, to install CAJA
file manager with its plugins (originally comes with Mate desktop). As I work
with it for about two weeks it seems to be OK. No freeze, no proble
Important News!
Trying find an other file-handling solution instead of PcManFM, I
installed Thunar on Lubunu 18.04.1 LTS,
AND IT DOES JUST THE SAME KIND OF FREEZING
Accessing directory or file it freezes.
Unfortunately there is no crash report so far...
But the situation is just the same.
A new Crash file (/var/crash/)is available from an istalled Lubutnu 18.04.1 64
bit desktop version.
The situation is just the same, when accessing a directory, PcManFM window
freezes.
Regards,
Janos
** Attachment added: "crash file of PCManFM Lubuntu 18.04.1 _10.10.2018"
https://bugs.launch
Just a little update,
clicking the "Go to parent directory" (Up arrow) in PcManFM window I got a
crash also. So not the file or directory clicking cause crash only.
Thanks,
Janos
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https:
OK, thanks, Here I send all the saved logs include the .crash file
syslog, kern.log etc.
** Attachment added: "Tar Gzip compressed Log files of PCManFM crash"
https://bugs.launchpad.net/ubuntu/+source/pcmanfm/+bug/1782984/+attachment/5195416/+files/Logs_of_PcManFM_Crash.tar.gz
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You should be able to attach the files here. The .crash will likely be
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Title:
PCManFM crashes frequently on Lubuntu 18.04
To
Dear Walter,
I have the results from HP machine with AMD Athlon II 250 processor and
4GB Ram.
After booting Live CD and starting PcManFM I nearly immediately got the crash.
Apport function dropped up a "System Program Error Detected" window, then I
succeeded to save some logs from /var/log and /
Dear Walter,
Unfortunately you are right,
There is no clear steps to get a freeze. It is completely stochastic, depends
on no special steps. Whenever it thinks it freezes. Strange because of no other
program freezes, window managing seems to be OK, in this way I have to thing
the problem is whe
Here's what I tried based on my interpretation of your steps to follow:
1. Boot 18.04.1
2. Select "Try Lubuntu"
3. Right click on the "Trash" icon at the upper left, click "Open in New
Window"
4. Repeat step 3
5. Open the task manager to keep an eye on things
6. In one of the PCManFM window
Dear Walter,
Just a little addendum.
When PcManFM freezes, all the running instances of it freezing, however their
windows are manageable which means minimizing, maximizing, moving are working
but telling the truth wen maximizing of course it doesn't show any window
content since the program is
Dear Walter,
There is no special conditions, only boot from USB or CD with Lubuntu
18.04 LTS on it, and choose "Try Lubuntu" function instead of "Install
Lubuntu". There is no need to use a HDD or SSD either.
There, when Desktop completes, click on the "File manager" icon in the
upper left corner
In regards to actually fixing the bug, this is great news. This means
that I should be able to reproduce it myself. Can you give me clear
steps to follow, especially with the default ext4 filesystem? That will
make it even easier if there are no special conditions.
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Dear Walter,
So here I am with the test result.
Starting only the Live CD without any extra driver, software, etc...
I don"t really know whether it is a bad news or good:
It does produce the freezing also.
The situation we can see is just the same, black backgrounded file-hint
stuck on the scre
Dear Walter,
In last two days I haven't got time to look around in the topic, but I
discussed this problem with colleagues who develop softwares for
instruments using Linux, asking for their opinion. They told me if the
file operations remain alive after window crashing, it can mean the
problem mu
Thanks Janos. I think if we are persistent and approach this
scientifically, we can figure it out. If you can figure out some hint
(e.g. the USB) start eliminating variables and applying it to multiple
situations. When we can find something consistent, we'll be on our way.
The other thing we can t
Dear Walter,
I understood everything you wrote. I can promise tomorrow I will do a clean
install of Lubuntu 18.04 on a HP Desktop AMD X2 250 machine and avoid any
upgrade, and I will test the behavior of the file manager. As I remember - on
an updated system of course - the problem came up more
Ok, so at least several filesystems do have this problem.
To get at the bottom of this, we need to be very careful about
conflating issues together. There may be some other things that are
possibly related, but let's not jump there quite yet. First we need to
identify the nature of the problem. Le
As a quick response to Walter's important question as I see freezing of PcManFM
is not really file system dependent. For me it freezes with NTFS, FAT32, FAT16
(USB sticks) and EXT4 file systems (Lubuntu installed) either. Tested hardware
background is a HP Elite 8300 Pro and HP 6300 Pro. Both of
Agreeing with Ben I can confirm the situation.
When multiple instances of PcManFM run and one of them freezes by accessing a
file by user as it has been described above, other instances' windows become
unresponsive, but seemingly the running processes (eg. copying) run in the
background. One tim
So important question: which filesystem(s) is this happening with?
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Title:
PCManFM crashes frequently on Lubuntu 18.04
To manage notifications
I have some additional information regarding the crash. I use a samba
share with mp3fs on it. This is a file system that transfers files to
mp3 upon access (https://khenriks.github.io/mp3fs/).
Janos Verebes wrote that PCmanFM does not crash while performing
actions. I have made the experience that
I want to add, that I love PCmanFM above all other options! We need this
to work! The clean surface of PCmanFM fits perfectly into Lubuntu. It
was a blessing to work with it. There is no clean alternative.
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Same problem here with Lubuntu Bionic (18.04.01 LTS 64bit Desktop). PcManFM
crashes quite often when accessing folders or files, it seems like a timing
problem. There is no any rule of freezing. It is random and it seems is not
depending on any action or background activity.
The PcManFM window b
Same problem here on 18.04 (and previous versions). Crashes often for no
special reason. Is there a more stable alternative?
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Title:
PCManFM cras
I have the same problem with my installation of Lubuntu 18.04.01 LTS on
my Shuttle Barebone PC. When using it with my samba share from a NAS in
my LAN it crashes a lot.
Also, the icon of PCmanFM in the LXPanel 0.9.3 is not blue but black. If
I uptick the heigh of the icons in the panel then the ic
I don't get any error message, it just freezes (mouse still moves) and
after a minute or so the "has stopped responding" box pops up.
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Title:
PCM
Never had this until 18.04. Now it happens on several 64 and 32 bit
Lubuntu installs, as well as Ubuntu installs where I've added LXDE.
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Title:
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: pcmanfm (Ubuntu)
Status: New => Confirmed
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Title:
PC
Same bug here.
After upgrading to Lubuntu 18.04, pcmanfm crashes unexpectedly with the same
error message (No such file or directory:
'/etc/xdg/pcmanfm/Lubuntu/lubuntu.conf').
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Hi,
I can confirm this bug .. on Lubuntu 18.04 ...
I already had the same one on Lubuntu 17.04 ...
PCManFM unexpectedly closes when you open a folder and it seems to be more
common when the option 'Preserve directory's settings' is enabled
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Looking into this a bit later when I do some real hardware testing.
Thanks for the bug report.
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Title:
PCManFM crashes frequently on Lubuntu 18
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