compiz crashed with SIGSEGV in g_type_check_instance() from g_signal_emit_valist() from g_signal_emit() from bamf_matcher_on_active_window_changed() from bamf_marshal_VOID__STRING_STRING(

[Simon Clements-Hawes]

I had been changing icon themes using the 'advanced settings' application: 12.04.
Have now lost all UI 'chrome' - I have no GUI method of closing windows, no system keyboard shortcuts are working (alt+tab) but app-specific key's are working (ctrl+w is closing tabs in Google Chrome).

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: compiz-core 1:0.9.6+bzr20110929-0ubuntu8
ProcVersionSignature: Ubuntu 3.2.0-14.23-generic 3.2.3
Uname: Linux 3.2.0-14-generic i686
.tmp.unity.support.test.0:

ApportVersion: 1.91-0ubuntu1
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,imgpng,resize,mousepoll,imgjpeg,regex,grid,gnomecompat,animation,move,text,expo,vpswitch,ezoom,snap,place,wall,thumbnail,workarounds,session,fade,scale,unityshell]
CompositorRunning: compiz
CrashCounter: 1
Date: Wed Feb 8 19:44:22 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI Radeon Mobility X1400 [1002:7145] (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:202a]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha i386 (20111129.1)
MachineType: LENOVO 9450HAG
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdline: compiz
ProcEnviron:
 LANGUAGE=en_GB:en
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-14-generic root=UUID=eb375c7f-8ed2-40c5-97bf-bd670edd0f82 ro quiet splash vt.handoff=7
SegvAnalysis:
 Segfault happened at: 0x31bfe51 <g_type_check_instance+33>: mov (%eax),%edx
 PC (0x031bfe51) ok
 source "(%eax)" (0x00000ad7) not located in a known VMA region (needed readable region)!
 destination "%edx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 g_type_check_instance () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 g_signal_emit_valist () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 g_signal_emit () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libbamf3.so.0
 bamf_marshal_VOID__STRING_STRING () from /usr/lib/i386-linux-gnu/libbamf3.so.0
Title: compiz crashed with SIGSEGV in g_type_check_instance()
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.date: 08/26/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7FETA9WW (2.27 )
dmi.board.name: 9450HAG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7FETA9WW(2.27):bd08/26/2009:svnLENOVO:pn9450HAG:pvrThinkPadZ61m:rvnLENOVO:rn9450HAG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 9450HAG
dmi.product.version: ThinkPad Z61m
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu8
version.libdrm2: libdrm2 2.4.30-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0~rc2-0ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 8.0~rc2-0ubuntu4
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0~rc2-0ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.11.3-0ubuntu10
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901-1ubuntu3
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Apport retracing service (apport)]

StacktraceTop:
 g_type_check_instance (type_instance=0x975ea20) at /build/buildd/glib2.0-2.31.16/./gobject/gtype.c:4072
 g_signal_emit_valist (instance=0x975ea20, signal_id=221, detail=0, var_args=0xbface03c "x\035F\t\340\031F\tP\350%\n\230\341\314\t\316+\034\003P\350%\n\001") at /build/buildd/glib2.0-2.31.16/./gobject/gsignal.c:2966
 g_signal_emit (instance=0x975ea20, signal_id=221, detail=0) at /build/buildd/glib2.0-2.31.16/./gobject/gsignal.c:3090
 bamf_matcher_on_active_window_changed (proxy=0x9cce198, old_path=0xa18a1b8 "/org/ayatana/bamf/window58720260", new_path=0xa251988 "/org/ayatana/bamf/window23068676", matcher=0x975ea20) at /build/buildd/bamf-0.2.108/./lib/libbamf/bamf-matcher.c:194
 bamf_marshal_VOID__STRING_STRING (closure=0x9d360f0, return_value=0x0, n_param_values=3, param_values=0xa25e850, invocation_hint=0xbface210, marshal_data=0x0) at bamf-marshal.c:84
ThreadStacktrace: Cannot find new threads: generic error

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[jhfhlkjlj (fdsuufijjejejejej-deactivatedaccount)]

This is likely a dupe of bug 930575.

[Will Cooke (willcooke)]

As part of the big bug clear up for 16.04 LTS I am marking this bug as Wont Fix.
These types of crasher are better handled by errors.ubutnu.com which can collate similar crash reports to help us identify persitent bugs rather than one-off crashes.
Sorry we are not able to help with this specific issue. If you are still experiencing this crash, please re-open the bug and add the tag "desktop-bugscrub-reopened". See https://wiki.ubuntu.com/BigDesktopBugScrub for more information.