compiz crashed with SIGSEGV in xcb_glx_get_string_string_length() from glGetString() from GLScreen::glInitContext()

[Uli]

Unable to login with units 3D.
Chipset graphics: ATI RS780L

ProblemType: Crash
DistroRelease: Ubuntu 12.04
Package: compiz-core 1:0.9.7.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-20.32-generic-pae 3.2.12
Uname: Linux 3.2.0-20-generic-pae i686
.tmp.unity.support.test.0:

.tmp.unity.support.test.1:

ApportVersion: 1.95-0ubuntu1
Architecture: i386
CompizPlugins: [core,bailer,detection,composite,opengl,compiztoolbox,decor,imgpng,resize,snap,gnomecompat,grid,place,mousepoll,regex,move,vpswitch,session,animation,workarounds,wall,fade,expo,scale,ezoom,unityshell]
CompositorRunning: compiz
Date: Sun Mar 25 10:03:52 2012
DistUpgraded: 2011-12-21 18:46:50,987 DEBUG enabling apt cron job
DistroCodename: precise
DistroVariant: ubuntu
ExecutablePath: /usr/bin/compiz
MachineType: BIOSTAR Group TA760G M2+
ProcCmdline: Compiz
ProcEnviron:
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: root=UUID=f1e0c43c-81df-461d-9b61-9c1e2b3232e3 ro pnpbios=off 8250.nr_uarts=4 quiet splash
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: compiz
Title: compiz crashed with SIGSEGV in xcb_glx_get_string_string_length()
UpgradeStatus: Upgraded to precise on 2011-12-21 (94 days ago)
UserGroups: adm admin cdrom chipcard dialout lpadmin plugdev sambashare
dmi.bios.date: 09/02/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 080014
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: TA760G M2+
dmi.board.vendor: BIOSTAR Group
dmi.chassis.asset.tag: None
dmi.chassis.type: 3
dmi.chassis.vendor: BIOSTAR Group
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr080014:bd09/02/2009:svnBIOSTARGroup:pnTA760GM2+:pvr:rvnBIOSTARGroup:rnTA760GM2+:rvr:cvnBIOSTARGroup:ct3:cvr:
dmi.product.name: TA760G M2+
dmi.sys.vendor: BIOSTAR Group
version.compiz: compiz 1:0.9.7.2-0ubuntu1
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1
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 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

[Uli (u14-mayer)]

One possibly unrelated observation: The mouse is very sluggish at the login menue of lightdm. It's good once a user is logged on.

[Apport retracing service (apport)]

StacktraceTop:
 xcb_glx_get_string_string_length (R=0x0) at glx.c:9009
 __glXGetString (dpy=0x85070d0, opcode=154, contextTag=10092549, name=7939) at glx_query.c:82
 __indirect_glGetString (name=7939) at single2.c:685
 GLScreen::glInitContext (this=0x8559340, visinfo=0x8646fd0) at /build/buildd/compiz-0.9.7.2/plugins/opengl/src/screen.cpp:145
 GLScreen::GLScreen (this=0x8559340, s=0x8501490) at /build/buildd/compiz-0.9.7.2/plugins/opengl/src/screen.cpp:577

[Launchpad Janitor (janitor)]

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

[Daniel van Vugt (vanvugt)]

This looks similar to bug 958212. But different.

[Daniel van Vugt (vanvugt)]

This might be the same problem, essentially, as bug 944653

[Alberto Salvia Novella (es20490446e)]

Since this bug:

- Is valid.
- Is well described.
- Is reported in the upstream project.
- Is ready to be worked on by a developer.

It's already triaged.

[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.