unity-panel-service crashed with SIGSEGV in g_type_check_instance_cast()

[Jason Warner]

Clicking volume control indicator caused this.

Exact step was:

1. Click on volume indicator
2. attempt to raise volume
3. watch volume go from 0% to 100% (no stopping)
4. system hang for approx 30 seconds.
5. recover and crash

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: unity-services 4.2.0-0ubuntu4
ProcVersionSignature: Ubuntu 3.0.0-5.6-generic-pae 3.0.0-rc7
Uname: Linux 3.0.0-5-generic-pae i686
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,staticswitcher,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: compiz
CrashCounter: 1
Date: Sat Jul 16 15:45:59 2011
DistUpgraded: Log time: 2011-06-15 08:28:12.994726
DistroCodename: oneiric
DistroVariant: ubuntu
ExecutablePath: /usr/lib/unity/unity-panel-service
GraphicsCard:
 nVidia Corporation G84M [Quadro FX 570M] [10de:040c] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: Lenovo ThinkPad T61p [17aa:20d9]
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: LENOVO 646067U
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdline: /usr/lib/unity/unity-panel-service
ProcEnviron:
 SHELL=/bin/bash
 LANGUAGE=en_AU:en
 LANG=en_AU.UTF-8
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-5-generic-pae root=UUID=a2df561a-fffa-439f-9910-22efa03470da ro quiet splash vt.handoff=7
Renderer: Unknown
SegvAnalysis:
 Segfault happened at: 0xb712152f <g_type_check_instance_cast+15>: call 0xb70f5c67
 PC (0xb712152f) ok
 source "0xb70f5c67" (0xb70f5c67) ok
 destination "(%esp)" (0xbf212000) not located in a known VMA region (needed writable region)!
 Stack memory exhausted (SP below stack segment)
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: unity
StacktraceTop:
 g_type_check_instance_cast () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/libgtk-3.so.0
 gtk_container_forall () from /usr/lib/libgtk-3.so.0
 ?? () from /usr/lib/libgtk-3.so.0
 ?? () from /usr/lib/libgtk-3.so.0
Title: unity-panel-service crashed with SIGSEGV in g_type_check_instance_cast()
UpgradeStatus: Upgraded to oneiric on 2011-06-14 (31 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 05/11/2009
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LETC6WW (2.26 )
dmi.board.name: 646067U
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:bvr7LETC6WW(2.26):bd05/11/2009:svnLENOVO:pn646067U:pvrThinkPadT61p:rvnLENOVO:rn646067U:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 646067U
dmi.product.version: ThinkPad T61p
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.4+bzr20110606-0ubuntu6
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11~1-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 7.11~1-0ubuntu3
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11~1-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.2-1ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.0-3ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

[Apport retracing service (apport)]

StacktraceTop:
 g_type_check_instance_cast (type_instance=0x92870d8, iface_type=153927760) at /build/buildd/glib2.0-2.29.10/./gobject/gtype.c:3977
 gtk_image_menu_item_forall (container=0x92870d8, include_internals=1, callback=0xb74b0c30 <gtk_grab_notify_foreach>, callback_data=0xbf212274) at /build/buildd/gtk+3.0-3.1.8/./gtk/gtkimagemenuitem.c:634
 gtk_container_forall (container=0x92870d8, callback=0xb74b0c30 <gtk_grab_notify_foreach>, callback_data=0xbf212274) at /build/buildd/gtk+3.0-3.1.8/./gtk/gtkcontainer.c:2031
 gtk_grab_notify_foreach (child=0x92870d8, data=0xbf212274) at /build/buildd/gtk+3.0-3.1.8/./gtk/gtkmain.c:2099
 gtk_menu_shell_forall (container=0x92cb088, include_internals=1, callback=0xb74b0c30 <gtk_grab_notify_foreach>, callback_data=0xbf212274) at /build/buildd/gtk+3.0-3.1.8/./gtk/gtkmenushell.c:1248

[Jorge Luis Ramírez Orozco (jlrogb)]

The unity global menu and the indicators are crazy. Some indicators are not shown and the indicator-datetime changes between english and spanish (my laguage). The unity global menu appears and disappears from the app's window. All of this is shown in the video.

[Les Lamb (kernelles)]

For me, steps to produce this error were:

1. Clicked on logout indicator
2. Blank transparent menu appeared and panel got frozen
3. Blank transparent menu disappeared, but now the logout indicator does not respond when clicked on.

I am also having issues with the volume control, as mentioned above, but mine is different. It doesn't freeze when I use it, but it will only operate at 0 or 100%, nothing in between. Not sure if that is a separate issue or not, so I'll mention it anyway.

[Conor Curran (cjcurran)]

I think this should disappear once we figure out the gtk patch needed for Libido to work nicely with gtk3. On my radar.

[Neil J. Patel (njpatel)]

I reopened in Unity so we can track it easily.

[omarly666 (omarly666)]

same as first post but I was trying to lower volume. all disappears for a while. luckily it came back

you had it back on 9.10? steady as a rock and sensors and one tiny panel.

maybe i must go mint - but I was such a BIG BIG fan for so long.

[Ted Gould (ted)]

I believe this should have been fixed by ido 0.2.93 which was released on 9-20-2011, there hasn't been a duplicate since then, so I'm going to mark this as Fixed. Please submit a new bug if this is still continuing to be an issue.

[Jono Bacon (jonobacon)]

This just happened to me and I am currently up to date. It happened when I unsuspended.

[dack (dack)]

I am still having this issue. Clicking on the volume control crashes unity-panel-service. dmesg shows this:

unity-panel-ser[22959]: segfault at 1c ip 00007fbeeb594235 sp 00007fff40b08530 error 4 in libgdk-3.so.0.200.0 (deleted)[7fbeeb565000+77000]