Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[intrigeri]

Jens Reyer:
> This bug is still marked as unreproducible.  Did you (or anyone else)
> try to reproduce with my previously described steps (see below)?

I did that a while ago, but it was on Tails (based on Jessie back
then): https://labs.riseup.net/code/issues/10797

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[Jens Reyer]

control: forwarded -1 https://bugzilla.gnome.org/show_bug.cgi?id=784223
control: found -1 3.22.4-2


On 07/20/2017 07:27 AM, intrigeri wrote:
> The Mutter 3.24.4 announcement says that
> https://bugzilla.gnome.org/show_bug.cgi?id=784223 has been fixed.
> I suspect this is the same bug as this one.

Thanks, intrigeri!  That indeed looks identical.


> So anyone affected: please try to reproduce once Mutter 3.24.4 is in
> Debian :) Thanks in advance!

I'll do so.  I also verified that the current version is still affected
here.

This bug is still marked as unreproducible.  Did you (or anyone else)
try to reproduce with my previously described steps (see below)?

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=782075#84
> In a freshly installed Stretch system (my main machine) this happens
> only if you've set in the Gnome Tweak Tool:
> 
>  Desktop - Icons on Desktop - On
> 
> After this as previously described:
>  Workspaces - Workspace Creation - Static
>  Workspaces - Number of Workspaces - Reduce by one
>   --> the Desktop wallpaper gets black for a short time, then
>   everything is back to normal.
>  Workspaces - Number of Workspaces - Reduce by one
>   --> Gnome session crashes

Greets!
jre

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[intrigeri]

The Mutter 3.24.4 announcement says that
https://bugzilla.gnome.org/show_bug.cgi?id=784223 has been fixed.
I suspect this is the same bug as this one.

So anyone affected: please try to reproduce once Mutter 3.24.4 is in
Debian :) Thanks in advance!

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[Jens Reyer]

control: found -1 mutter/3.21.91-2

Hi Andreas Henriksson,

I think I found how to reproduce this:

In a freshly installed Stretch system (my main machine) this happens
only if you've set in the Gnome Tweak Tool:

 Desktop - Icons on Desktop - On

After this as previously described:
 Workspaces - Workspace Creation - Static
 Workspaces - Number of Workspaces - Reduce by one
  --> the Desktop wallpaper gets black for a short time, then
  everything is back to normal.
 Workspaces - Number of Workspaces - Reduce by one
  --> Gnome session crashes


Further observations from my fresh installation tests on my main machine:

New Jessie installation, no changes --> crash reproducible
Update to Stretch, still no changes --> no crash

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[Jens Reyer]

control: found -1 3.14.4-1~deb8u1

I just reproduced the crash on a freshly installed *Jessie* laptop (only
the tasks Gnome, ssh-server, system utils, and the packages etckeeper
and smartmontools* installed, nothing else, no changes).

So I can/could reproduce this on 3 machines:
2x on Jessie
1x on Stretch/Sid/experimental

However recently (see buglog) I found that this doesn't happen anymore
for fresh users on the Stretch machine, while my regular user on the
same machine still experiences this. When I first reported this bug even
fresh users on that machine experienced the bug.

Therefore I assume the main issue is fixed in todays mutter, but there
are some configuration/whatever settings remaining which still affect
todays mutter. So users updating from Jessie to Stretch might be affected.

I'll probably reinstall my Stretch machine soon - I might do that twice,
once Jessie->Stretch, and once Stretch directly. Any tips what I should
do then, besides creating the backtrace?

Greets
jre

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[Jens Reyer]

Control: found -1 3.21.91-1

Hi Andreas

I updated my system as requested (had to uninstall the gnome metapackage
and some extensions).

I can still reproduce this for my regular user with mutter/gnome-shell
3.21.91-1, see attachment. All extensions were disabled.

However it now works for a fresh user. Note that in the past I could
reproduce this on two machines, even for fresh users, see buglog.

At least GNOME now (at least since 3.20) doesn't disable all extensions
automatically anymore after a crash :)

Greets
jre
. xenv.sh
jens@hope:~$ gdb --args /usr/bin/gnome-shell --replace
GNU gdb (Debian 7.11.1-2) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
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-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 /usr/bin/gnome-shell...Reading symbols from 
/usr/lib/debug/.build-id/78/afdb18f04b732ec496f2beb1489f0c899b0a41.debug...done.
done.
(gdb) run
Starting program: /usr/bin/gnome-shell --replace
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffdfaf1700 (LWP 4728)]
[New Thread 0x7fffdd0fe700 (LWP 4743)]
[New Thread 0x7fffdc8fd700 (LWP 4744)]
[New Thread 0x7fffcfdf2700 (LWP 4745)]
[New Thread 0x7fffcf3e9700 (LWP 4748)]
[New Thread 0x7fffcebe8700 (LWP 4749)]
[New Thread 0x7fffce3e7700 (LWP 4750)]
Gjs-Message: JS LOG: Failed to launch ibus-daemon: Failed to execute 
child process "ibus-daemon" (No such file or directory)
Gjs-Message: JS LOG: Failed to add search provider 
/usr/share/gnome-shell/search-providers/org.gnome.bijiben-search-provider.ini: 
TypeError: appInfo is null
[New Thread 0x7fffabfff700 (LWP 4760)]
[New Thread 0x7fffaaf33700 (LWP 4766)]
[Thread 0x7fffdc8fd700 (LWP 4744) exited]
[Thread 0x7fffabfff700 (LWP 4760) exited]
[New Thread 0x7fffabfff700 (LWP 4768)]
[New Thread 0x7fffdc8fd700 (LWP 4769)]
[New Thread 0x7fffa8b9c700 (LWP 4770)]
[New Thread 0x7fff9fffe700 (LWP 4771)]
[New Thread 0x7fff9f7fd700 (LWP 4772)]
[New Thread 0x7fff9effc700 (LWP 4773)]
[Thread 0x7fff9effc700 (LWP 4773) exited]
[Thread 0x7fffa8b9c700 (LWP 4770) exited]
[Thread 0x7fffaaf33700 (LWP 4766) exited]
[Thread 0x7fff9fffe700 (LWP 4771) exited]
[New Thread 0x7fff9fffe700 (LWP 4801)]
[New Thread 0x7fffaaf33700 (LWP 4802)]
[New Thread 0x7fffa8b9c700 (LWP 4803)]
[New Thread 0x7fff9effc700 (LWP 4804)]
[New Thread 0x7fff9e7fb700 (LWP 4805)]
[Thread 0x7fff9e7fb700 (LWP 4805) exited]
[Thread 0x7fff9effc700 (LWP 4804) exited]
[Thread 0x7fffa8b9c700 (LWP 4803) exited]
[Thread 0x7fffaaf33700 (LWP 4802) exited]
[Thread 0x7fff9f7fd700 (LWP 4772) exited]
[Thread 0x7fffdc8fd700 (LWP 4769) exited]
[Thread 0x7fff9fffe700 (LWP 4801) exited]
**
mutter:ERROR:core/screen.c:1206:update_num_workspaces: assertion failed: 
(w->windows == NULL)

Thread 1 "gnome-shell" received signal SIGABRT, Aborted.
0x74a03198 in __GI_raise (sig=sig@entry=6) at 
../sysdeps/unix/sysv/linux/raise.c:54
54  ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) t a a bt

Thread 11 (Thread 0x7fffabfff700 (LWP 4768)):
#0  0x74ab2d49 in syscall () at 
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x7501df7a in g_cond_wait_until (cond=cond@entry=0x88a248, 
mutex=mutex@entry=0x88a240, end_time=end_time@entry=227780230) at 
././glib/gthread-posix.c:1442
#2  0x74face39 in g_async_queue_pop_intern_unlocked 
(queue=queue@entry=0x88a240, wait=wait@entry=1, 
end_time=end_time@entry=227780230) at ././glib/gasyncqueue.c:422
#3  0x74fad45c in g_async_queue_timeout_pop (queue=0x88a240, 
timeout=timeout@entry=1500) at ././glib/gasyncqueue.c:543
#4  0x750009cd in g_thread_pool_thread_proxy () at 
././glib/gthreadpool.c:167
#5  0x750009cd in g_thread_pool_thread_proxy (data=) at 
././glib/gthreadpool.c:364
#6  0x7405 in g_thread_proxy (data=0x2c16450) at 
././glib/gthread.c:784
#7  0x74d78444 in start_thread (arg=0x7fffabfff700) at 
pthread_create.c:333
#8  0x74ab720d in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 8 (Thread 0x7fffce3e7700 (LWP 4750)):
#0  0x74d7e07f in pthread_cond_wait@@GLIBC_2.3.2 () at 
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x7fffe6582d70 in PR_WaitCondVar (cvar=0x9c6eb0, 
timeout=timeout@entry=4294967295) at ptsynch.c:396
#2  0x706d0536 in 

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[Andreas Henriksson]

Hello Jens Reyer!

Thanks for the quick followup with useful information.

On Wed, Aug 31, 2016 at 05:08:08PM +0200, Jens Reyer wrote:
> Control: tags -1 - moreinfo
> Control: found -1 3.20.3-2
[...]

Could you please also test the latest gnome-shell / mutter
versions from unstable?

I'm not able to reproduce this issue with that version atleast.
(Tested both under Wayland and X11.)
Might have been fixed already which would be good to test before
I waste too much time digging into this.

Regards,
Andreas Henriksson

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[Jens Reyer]

Control: tags -1 - moreinfo
Control: found -1 3.20.3-2

Hi

On 31.08.2016 06:09, Andreas Henriksson wrote:
> Are you still able to reproduce this issue? If so could you please
> provide a full backtrace including debugging symbols for it?
> 
> https://wiki.debian.org/HowToGetABacktrace

Yes, still happens every time I decrease the number of workspace
windows by one. If I repeat that step the whole GNOME session
crashes.

See attached screenlog.0

I followed https://wiki.gnome.org/Projects/GnomeShell/Debugging
(and added that link to the Debian wiki).


Exact steps I did:
[INSTALL] libmozjs-24-0-dbg:amd64 24.2.0-3.1
[INSTALL] libmutter0h-dbgsym:amd64 3.20.3-2
[INSTALL] libpulse0-dbgsym:amd64 9.0-2
[INSTALL] gnome-shell-dbgsym:amd64 3.20.3-1+b1
$ cat ~/xenv.sh
gnome_session=$(pgrep -u $USER gnome-session)
eval export $(sed 's/\o000/\n/g;' < /proc/$gnome_session/environ | grep DISPLAY)
eval export $(sed 's/\o000/\n/g;' < /proc/$gnome_session/environ | grep 
XAUTHORITY)
eval export $(sed 's/\o000/\n/g;' < /proc/$gnome_session/environ | grep 
DBUS_SESSION_BUS_ADDRESS)
--> Reboot
--> Login GNOME
--> CTRL-ALT-F3
--> Login tty3
$ screen
CTRL + A
SHIFT + H
$ . ~/xenv.sh
$ gdb --args /usr/bin/gnome-shell --replace
(gdb) run
--> CTRL-ALT-F2
--> Start Tweak Tool
Number of Workspaces was set to 2, but the same happens for 3 or 4.
--> Decrease Number of Workspaces by one
--> CRASH
--> CTRL-ALT-F3
(gdb) t a a bt
...
(gdb) call gjs_dumpstack ()


Greets
jre
jens@hope:~$ . xenv.sh
jens@hope:~$ gdb --args /usr/bin/gnome-shell --replace
GNU gdb (Debian 7.11.1-2) 7.11.1
Copyright (C) 2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later 
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-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 /usr/bin/gnome-shell...Reading symbols from 
/usr/lib/debug/.build-id/8c/1e32f199e1391f19f8887cefa889baa7a5a774.debug...done.
done.
(gdb) run
Starting program: /usr/bin/gnome-shell --replace
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7fffdff9c700 (LWP 5010)]
[New Thread 0x7fffdd5a9700 (LWP 5042)]
[New Thread 0x7fffdcda8700 (LWP 5043)]
[New Thread 0x7fffc700 (LWP 5044)]
[New Thread 0x7fffcf7fe700 (LWP 5045)]
[New Thread 0x7fffceffd700 (LWP 5046)]
[New Thread 0x7fffce7fc700 (LWP 5047)]
Gjs-Message: JS LOG: Failed to launch ibus-daemon: Failed to execute child 
process "ibus-daemon" (No such file or directory)
Gjs-Message: JS LOG: Failed to add search provider 
/usr/share/gnome-shell/search-providers/org.gnome.bijiben-search-provider.ini: 
TypeError: appInfo is null
[New Thread 0x7fffabfff700 (LWP 5066)]
[New Thread 0x7fffaa668700 (LWP 5073)]
[Thread 0x7fffdcda8700 (LWP 5043) exited]
[Thread 0x7fffabfff700 (LWP 5066) exited]
[New Thread 0x7fffabfff700 (LWP 5077)]
[New Thread 0x7fffdcda8700 (LWP 5078)]
[New Thread 0x7fffa9e67700 (LWP 5079)]
[New Thread 0x7fffa8b9c700 (LWP 5080)]
[New Thread 0x7fff9fffe700 (LWP 5081)]
[New Thread 0x7fff9f7fd700 (LWP 5082)]
[Thread 0x7fffa9e67700 (LWP 5079) exited]
[Thread 0x7fffaa668700 (LWP 5073) exited]
[Thread 0x7fff9f7fd700 (LWP 5082) exited]
[Thread 0x7fffa8b9c700 (LWP 5080) exited]
[New Thread 0x7fffa8b9c700 (LWP 5103)]
[New Thread 0x7fff9f7fd700 (LWP 5104)]
[New Thread 0x7fffaa668700 (LWP 5107)]
[New Thread 0x7fffa9e67700 (LWP 5108)]
[New Thread 0x7fff9effc700 (LWP 5109)]
[New Thread 0x7fff9e7fb700 (LWP 5110)]
[New Thread 0x7fff9dffa700 (LWP 5112)]
[Thread 0x7fff9e7fb700 (LWP 5110) exited]
[Thread 0x7fffa8b9c700 (LWP 5103) exited]
[Thread 0x7fff9f7fd700 (LWP 5104) exited]
[Thread 0x7fffdcda8700 (LWP 5078) exited]
[Thread 0x7fffa9e67700 (LWP 5108) exited]
[Thread 0x7fff9fffe700 (LWP 5081) exited]
[Thread 0x7fffabfff700 (LWP 5077) exited]
[Thread 0x7fff9effc700 (LWP 5109) exited]
[Thread 0x7fff9dffa700 (LWP 5112) exited]
[New Thread 0x7fff9dffa700 (LWP 5162)]
[Thread 0x7fffaa668700 (LWP 5107) exited]
**
mutter:ERROR:core/screen.c:1206:update_num_workspaces: assertion failed: 
(w->windows == NULL)

Thread 1 "gnome-shell" received signal SIGABRT, Aborted.
0x74a30198 in __GI_raise (sig=sig@entry=6) at 
../sysdeps/unix/sysv/linux/raise.c:54
54  ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
(gdb) t a a bt

Thread 24 (Thread 0x7fff9dffa700 (LWP 5162)):
#0  0x74adfd49 in syscall () at 
../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x750494ea in g_cond_wait_until (cond=cond@entry=0x889668, 

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[Andreas Henriksson]

Control: tags -1 + moreinfo

Hello jre!

Are you still able to reproduce this issue? If so could you please
provide a full backtrace including debugging symbols for it?

https://wiki.debian.org/HowToGetABacktrace

Regards,
Andreas Henriksson

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[jre]

Control: found -1 3.14.4-1


Hi,

here's the screenlog/backtrace following
https://wiki.gnome.org/Projects/GnomeShell/Debugging after upgrading to
the new mutter version.

The log/backtrace shows the assertion failed in mutter when I reduced
the number of workspaces in Gnome Tweak Tool the first time.

I didn't do the second reduction, which would be necessary to actually
crash the Gnome session.

Greets
jre

. xenv.sh 
bash: /proc//environ: No such file or directory
declare -x DEBEMAIL=jre.wine...@gmail.com
declare -x DEBFULLNAME=jre
declare -x HOME=/home/jens
declare -x HUSHLOGIN=FALSE
declare -x LANG=en_US.UTF-8
declare -x LANGUAGE=en_US:en
declare -x LOGNAME=jens
declare -x 
LS_COLORS=rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.axv=01;35:*.anx=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.axa=00;36:*.oga=00;36:*.spx=00;36:*.xspf=00;36:
declare -x MAIL=/var/mail/jens
declare -x OLDPWD
declare -x PATH=/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games
declare -x PWD=/home/jens
declare -x SHELL=/bin/bash
declare -x SHLVL=2
declare -x STY=7905.tty2.hope
declare -x TERM=screen.linux
declare -x TERMCAP=SC|screen.linux|VT 100/ANSI X3.64 virtual terminal:\\
:DO=\\E[%dB:LE=\\E[%dD:RI=\\E[%dC:UP=\\E[%dA:bs:bt=\\E[Z:\\
:cd=\\E[J:ce=\\E[K:cl=\\E[H\\E[J:cm=\\E[%i%d;%dH:ct=\\E[3g:\\
:do=^J:nd=\\E[C:pt:rc=\\E8:rs=\\Ec:sc=\\E7:st=\\EH:up=\\EM:\\
:le=^H:bl=^G:cr=^M:it#8:ho=\\E[H:nw=\\EE:ta=^I:is=\\E)0:\\
:li#56:co#200:am:xn:xv:LP:sr=\\EM:al=\\E[L:AL=\\E[%dL:\\
:cs=\\E[%i%d;%dr:dl=\\E[M:DL=\\E[%dM:dc=\\E[P:DC=\\E[%dP:\\
:im=\\E[4h:ei=\\E[4l:mi:IC=\\E[%d@:ks=\\E[?1h\\E=:\\
:ke=\\E[?1l\\E:vi=\\E[?25l:ve=\\E[34h\\E[?25h:vs=\\E[34l:\\
:ti=\\E[?1049h:te=\\E[?1049l:us=\\E[4m:ue=\\E[24m:so=\\E[3m:\\
:se=\\E[23m:mb=\\E[5m:md=\\E[1m:mh=\\E[2m:mr=\\E[7m:\\
:me=\\E[m:ms:\\
:Co#8:pa#64:AF=\\E[3%dm:AB=\\E[4%dm:op=\\E[39;49m:AX:\\
:vb=\\Eg:as=\\E(0:ae=\\E(B:\\

:ac=\\140\\140aaffggjjkkllmmnnooppqqrrssttuuvvwwxxyyzz{{||}}~~..--++,,hhII00:\\
:Km=\\E[M:k0=\\E[10~:k1=\\EOP:k2=\\EOQ:k3=\\EOR:k4=\\EOS:\\
:k5=\\E[15~:k6=\\E[17~:k7=\\E[18~:k8=\\E[19~:k9=\\E[20~:\\
:k;=\\E[21~:F1=\\E[23~:F2=\\E[24~:F3=\\E[25~:F4=\\E[26~:\\
:F5=\\E[28~:F6=\\E[29~:F7=\\E[31~:F8=\\E[32~:F9=\\E[33~:\\
:FA=\\E[34~:kb=
:K2=\\E[G:kB=\\E[Z:kh=\\E[1~:@1=\\E[1~:\\
:kH=\\E[4~:@7=\\E[4~:kN=\\E[6~:kP=\\E[5~:kI=\\E[2~:kD=\\E[3~:\\
:ku=\\EOA:kd=\\EOB:kr=\\EOC:kl=\\EOD:
declare -x USER=jens
declare -x WINDOW=0
declare -x WINEDEBUG=fixme+all,err+all
declare -x XDG_RUNTIME_DIR=/run/user/1000
declare -x XDG_SEAT=seat0
declare -x XDG_SESSION_ID=5
declare -x XDG_VTNR=2
bash: /proc//environ: No such file or directory
declare -x DEBEMAIL=jre.wine...@gmail.com
declare -x DEBFULLNAME=jre
declare -x HOME=/home/jens
declare -x HUSHLOGIN=FALSE
declare -x LANG=en_US.UTF-8
declare -x LANGUAGE=en_US:en
declare -x LOGNAME=jens
declare -x 

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[jre]

Control: tags -1 - moreinfo

Hi,

[ I removed the moreinfo tag for now, although I assume the info
  that I provide is not sufficient yet. Still, I guess this matches
  the correct workflow. ]


On 04/10/2015 11:47 AM, Andreas Henriksson wrote:
 Thanks for your bug report, unfortunately it's not reproducible so
 you will have to provide more information or it will not be able to
 be investigated. Please provide session logs, a backtrace from the
 crashing process, etc.

Thanks for your answer. Strange, I could reproduce it on a freshly
installed Desktop PC and a laptop. The only common thing I can think
of is the Intel graphics hardware and arch amd64. Uneducated and
maybe biased guess ;)



For now I only found and attached (parts of) /var/log/user.log:

18:01:09: I reduce the number of workspaces by one (Desktop reloads
  (?), but no crash yet).
18:01:47: I reduce it by another one -- crash.

The crash seems to always happen after the 2nd reduction (increasing
works fine).

--- snip ---
Apr 12 18:01:47 hope gnome-tweak-tool.desktop[1911]: (gnome-tweak-tool:1911): 
Gtk-WARNING **: Failed to set text from markup due to error parsing markup: 
Error on line 1 char 190: Element 'span' was closed, but the currently open 
element is 'alt'
Apr 12 18:01:58 hope gnome-session[1257]: **
Apr 12 18:01:58 hope gnome-session[1257]: 
mutter:ERROR:core/screen.c:1250:update_num_workspaces: assertion failed: 
(w-windows == NULL)
Apr 12 18:01:58 hope gnome-session[1257]: x-session-manager[1257]: WARNING: 
Application 'gnome-shell.desktop' killed by signal 6
Apr 12 18:01:58 hope gnome-session[1257]: x-session-manager[1257]: WARNING: App 
'gnome-shell.desktop' respawning too quickly
--- snap ---



I'm a bit clueless which information to provide, e.g. which process
to backtrace, etc.. I found no logs in ~/gnome*. Instructions or
a reference to an instructional website are welcome.
I'd be happy to provide more information, currently hanging out on
#debian-gnome as jere21.

Greets
jre

Apr 12 17:58:32 hope gnome-session[999]: Gjs-Message: JS LOG: Failed to launch ibus-daemon: Failed to execute child process ibus-daemon (No such file or directory)
Apr 12 17:58:32 hope gdm-Xorg-:0[730]: The XKEYBOARD keymap compiler (xkbcomp) reports:
Apr 12 17:58:32 hope gdm-Xorg-:0[730]:  Warning:  Type ONE_LEVEL has 1 levels, but RALT has 2 symbols
Apr 12 17:58:32 hope gdm-Xorg-:0[730]:Ignoring extra symbols
Apr 12 17:58:32 hope gdm-Xorg-:0[730]: Errors from xkbcomp are not fatal to the X server
Apr 12 17:58:32 hope gnome-session[999]: (gnome-settings-daemon:1023): color-plugin-WARNING **: failed to get edid: unable to get EDID for output
Apr 12 17:58:32 hope gnome-session[999]: (gnome-settings-daemon:1023): color-plugin-WARNING **: unable to get EDID for xrandr-LVDS1: unable to get EDID for output
Apr 12 17:58:33 hope gnome-session[999]: Gjs-Message: JS LOG: GNOME Shell started at Sun Apr 12 2015 17:58:32 GMT+0200 (CEST)
Apr 12 17:58:42 hope mtp-probe: checking bus 2, device 7: /sys/devices/pci:00/:00:1c.4/:03:00.0/usb2/2-2/2-2.3
Apr 12 17:58:42 hope mtp-probe: checking bus 2, device 8: /sys/devices/pci:00/:00:1c.4/:03:00.0/usb2/2-2/2-2.4
Apr 12 17:58:42 hope mtp-probe: bus: 2, device: 7 was not an MTP device
Apr 12 17:58:42 hope mtp-probe: bus: 2, device: 8 was not an MTP device
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (II) config/udev: Adding input device Logitech USB-PS/2 Optical Mouse (/dev/input/mouse1)
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (II) No input driver specified, ignoring this device.
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (II) This device may have been added with another device file.
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (II) config/udev: Adding input device Logitech HID compliant keyboard (/dev/input/event13)
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (**) Logitech HID compliant keyboard: Applying InputClass evdev keyboard catchall
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (II) Using input driver 'evdev' for 'Logitech HID compliant keyboard'
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (**) Logitech HID compliant keyboard: always reports core events
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (**) evdev: Logitech HID compliant keyboard: Device: /dev/input/event13
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (--) evdev: Logitech HID compliant keyboard: Vendor 0x46d Product 0xc30e
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (--) evdev: Logitech HID compliant keyboard: Found 20 mouse buttons
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (--) evdev: Logitech HID compliant keyboard: Found keys
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (II) evdev: Logitech HID compliant keyboard: Forcing relative x/y axes to exist.
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (II) evdev: Logitech HID compliant keyboard: Configuring as mouse
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (II) evdev: Logitech HID compliant keyboard: Configuring as keyboard
Apr 12 17:58:42 hope gdm-Xorg-:0[730]: (**) evdev: Logitech HID compliant keyboard: 

Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[Andreas Henriksson]

Control: reassign -1 mutter

Hello!

On Sun, Apr 12, 2015 at 08:02:39PM +0200, jre wrote:
[...]
 Apr 12 18:01:58 hope gnome-session[1257]: 
 mutter:ERROR:core/screen.c:1250:update_num_workspaces: assertion failed: 
 (w-windows == NULL)
[...]

So it seems to be mutter crashing on an assertion failure, reassigning.
More information on your exact way to attempt to reproduce could be useful.
Exact number of workspaces, number of windows open and on which workspace
they reside, etc

https://wiki.debian.org/HowToGetABacktrace

If not even you can reproduce the problem I guess it will be hard to
get anywhere. In case you manage to do it again, please try with the
new mutter version that should be available in sid/unstable today/tomorrow.

Regards,
Andreas Henriksson


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Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[jre]

Control: found -1 3.14.2-1


Hi,

thanks for the quick answer.


On 04/12/2015 09:11 PM, Andreas Henriksson wrote:
 Control: reassign -1 mutter
 
 Hello!
 
 On Sun, Apr 12, 2015 at 08:02:39PM +0200, jre wrote:
 [...]
 Apr 12 18:01:58 hope gnome-session[1257]: 
 mutter:ERROR:core/screen.c:1250:update_num_workspaces: assertion failed: 
 (w-windows == NULL)
 [...]
 
 So it seems to be mutter crashing on an assertion failure, reassigning.
 More information on your exact way to attempt to reproduce could be useful.
 Exact number of workspaces, number of windows open and on which workspace
 they reside, etc

I can reproduce the crash everytime, on both machines. One of those was
a fresh installation.


Setup:

Fresh, new user. No changes at all. First login. The first thing after
logging in is to reproduce the crash. So no other windows/workspace
stuff or extensions.
(But it also happens for my regular user, with some Gnome Tweak Tool-
and probably dconf-changes, after working for some hours and having open
windows. No difference, I always get the crash.)


Reproduce:

1. Start Gnome Tweak Tool
2. In the Workspaces tab set Workspace Creation to static.
3. Click on the Minus next to Number of Workspaces, reducing it
   from 4 to 3.
  -- the Desktop wallpaper gets black for a short time, then
  everything is back to normal.
4. Click the Minus a second time, reducing it from 3 to 2 (without
   waiting for a longer time between both clicks.)
  -- The following screen appears:
Oh no! Something has gone wrong.
A problem has occured and the system can't recover.
All extensions have been disabled as a precaution.
Logout


 https://wiki.debian.org/HowToGetABacktrace
 
 If not even you can reproduce the problem I guess it will be hard to
 get anywhere. In case you manage to do it again, please try with the
 new mutter version that should be available in sid/unstable today/tomorrow.

Thanks for the link, but that's just the basic stuff. E.g. I have no
mutter process running. For now I've found
https://wiki.gnome.org/Projects/GnomeShell/Debugging, hope that works. I
will try tomorrow with the new mutter version.

Greets
jre


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Bug#782075: gnome-tweak-tool: Crashes Gnome when reducing Number of Workspaces

[jre]

Package: gnome-tweak-tool
Version: 3.14.2-2
Severity: serious
Justification: causes data loss


Hi,

reducing the Number of Workspaces (for Workspace Creation Static) in
the Workspaces tab of Gnome Tweak Tool crashes the whole Gnome session:


Oh no! Something has gone wrong.
A problem has occured and the system can't recover. All extensions have
been disabled as a precaution.



Therefore all unsaved changes in any running application are lost and
extensions have to be reenabled manually.


I noticed this on a fresh (2015-04-05) Jessie installation with no
extensions. I can reproduce it here on my daily-use-laptop Jessie
installation.


Thanks
jre



-- System Information:
Debian Release: 8.0
  APT prefers testing
  APT policy: (900, 'testing'), (300, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gnome-tweak-tool depends on:
ii  gir1.2-gnomedesktop-3.03.14.1-1
ii  gir1.2-gtk-3.0 3.14.5-1
ii  gir1.2-notify-0.7  0.7.6-2
ii  gir1.2-soup-2.42.48.0-1
ii  gnome-shell-common 3.14.2-3
ii  gsettings-desktop-schemas  3.14.1-1
ii  mutter-common  3.14.2-1
ii  python 2.7.9-1
ii  python-gi  3.14.0-1

gnome-tweak-tool recommends no packages.

gnome-tweak-tool suggests no packages.

-- no debconf information


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