gnome-panel crashes when starting Unity 3D engine steam game - signal 5 in _XReply()

[Peter Schüller]

The game where I observe this is Magicite, however it seems to be the case for other steam games as well.

I run gnome-flashback session with compiz on Ubuntu 14.04.

When the game starts, the panel crashes and disappears. I have to restart it manually in a shell (it does not automatically respawn).

ProblemType: Crash
DistroRelease: Ubuntu 14.04
Package: gnome-panel 1:3.8.0-1ubuntu12.2
ProcVersionSignature: Ubuntu 3.13.0-46.79-generic 3.13.11-ckt15
Uname: Linux 3.13.0-46-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: amd64
CurrentDesktop: Unity
Date: Tue Mar 31 17:44:27 2015
ExecutablePath: /usr/bin/gnome-panel
ExecutableTimestamp: 1412098123
GsettingsChanges:

InstallationDate: Installed on 2014-09-05 (207 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
ProcCmdline: gnome-panel
ProcCwd: /home/ps
Signal: 5
SourcePackage: gnome-panel
StacktraceTop:
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 XSync () from /usr/lib/x86_64-linux-gnu/libX11.so.6
 ?? () from /usr/lib/x86_64-linux-gnu/libcairo.so.2
Title: gnome-panel crashed with signal 5 in _XReply()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom debian-tor dip fuse lpadmin plugdev sambashare sudo

[Peter Schüller (schueller-p)]

Subscribed Christopher Penalver because he requested the bug to be reported this way.

[Apport retracing service (apport)]

This crash has the same stack trace characteristics as bug #1293252. However, the latter was already fixed in an earlier package version than the one in this report. This might be a regression or because the problem is in a dependent package.

[Apport retracing service (apport)]

StacktraceTop:
 XSync (dpy=0x113eb00, discard=discard@entry=0) at ../../src/Sync.c:44
 sync (display=0x1292200, display=0x1292200) at /build/buildd/cairo-1.13.0~20140204/src/cairo-xlib-surface-shm.c:461
 _cairo_xlib_surface_update_shm (surface=surface@entry=0x1913f10) at /build/buildd/cairo-1.13.0~20140204/src/cairo-xlib-surface-shm.c:952
 _cairo_xlib_surface_get_shm (surface=surface@entry=0x1913f10, overwrite=overwrite@entry=0) at /build/buildd/cairo-1.13.0~20140204/src/cairo-xlib-surface-shm.c:1045
 _cairo_xlib_surface_acquire_source_image (abstract_surface=0x1913f10, image_out=0x7fff05ce1490, image_extra=<optimized out>) at /build/buildd/cairo-1.13.0~20140204/src/cairo-xlib-surface.c:1394

[penalvch (penalvch)]

Peter Schüller, thank you for reporting this and helping make Ubuntu better. Does this issue occur with the latest release of Ubuntu via http://cdimage.ubuntu.com/daily-live/current/ ?

[Peter Schüller (schueller-p)]

I need to boot from this live-cd and there install steam and the game to test it, is that correct?

I have another 14.04 ubuntu where the bug does not happen with the same game, so it might be hardware-specific.

[Peter Schüller (schueller-p)]

As I have no memory stick here at the moment I tried some more things:
* the crash is reproducible in gnome-flashback compiz
* the crash is reproducible in gnome-flashback metacity
* the crash is reproducible in unity (when I manually start the gnome-panel)
* if I restart the gnome-panel while the game is running, it immediately crashes again

[Alberts Muktupāvels (muktupavels)]

It is bug in libwnck and should be fixed in vivid - next ubuntu release. For more info:
https://bugs.launchpad.net/ubuntu/+source/libwnck3/+bug/1293252

There is ppa with fix...

Dmitry, can you backport fix at least to trusty?

[Peter Schüller (schueller-p)]

I can confirm that the ppa in 1293252 fixes the crash.

[Dmitry Shachnev (mitya57)]

Yes, I will backport it.

[Peter Schüller (schueller-p)]

Thank you!