compiz crashed closing command window

[Peter T Hayward]

Running ubuntu 12.10 on Apple iMac 11,2.
Just upgraded (included kernel 3.5.0-13) and rebooted.
Ran 'top' in command window and watched compiz CPU level (seems lower now).
Quit 'top' with q. Tried to close command window with red X button.
No reaction and desktop froze - except for mouse pointer.
Gave it a minute and switched to tty1. Switched back to tty7 and after a few seconds the desktop returned.
A crash window came up... identifying compiz. I chose to restart compiz.
I have had several compiz-related crashes lately, most have been unreportable due to apport not completing its process.

One bug title, occuring just after this one I am reporting, was 'compiz crashed with SIGSEGV in TfpTexture::bindTexImage()'. The crash report for that seemed to hang at the web page stage, which is where I got this title.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: xorg 1:7.7+1ubuntu3
ProcVersionSignature: Ubuntu 3.5.0-13.13-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
ApportVersion: 2.5.1-0ubuntu3
Architecture: amd64
Date: Wed Aug 29 08:27:02 2012
DistUpgraded: Fresh install
DistroCodename: quantal
DistroVariant: ubuntu
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI RV730 XT [Mobility Radeon HD 4670] [1002:9488] (prog-if 00 [VGA controller])
   Subsystem: Apple Inc. Device [106b:00b6]
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64+mac (20120819)
MachineType: Apple Inc. iMac11,2
ProcEnviron:
 LANGUAGE=en_GB:en
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: vmlinuz-3.5.0-13-generic root=UUID=d3dd900b-6717-4b39-838b-a636b460d5df ro nosplash nomodeset initrd=EFI\ubuntu\initrd.img-3.5.0-13-generic
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/09/11
dmi.bios.vendor: Apple Inc.
dmi.bios.version: IM112.88Z.0057.B01.1112090906
dmi.board.name: Mac-F2238AC8
dmi.board.vendor: Apple Inc.
dmi.chassis.type: 13
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-F2238AC8
dmi.modalias: dmi:bvnAppleInc.:bvrIM112.88Z.0057.B01.1112090906:bd12/09/11:svnAppleInc.:pniMac11,2:pvr1.0:rvnAppleInc.:rnMac-F2238AC8:rvr:cvnAppleInc.:ct13:cvrMac-F2238AC8:
dmi.product.name: iMac11,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.8+bzr3319-0ubuntu3
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.38-0ubuntu2
version.libgl1-mesa-dri: libgl1-mesa-dri 9.0~git20120821.c1114c61-0ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental 9.0~git20120821.c1114c61-0ubuntu2
version.libgl1-mesa-glx: libgl1-mesa-glx 9.0~git20120821.c1114c61-0ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.12.99.905-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.99.99~git20120713.6ef1ad6a-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.20.3-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.1-4~ubuntu1

[Peter T Hayward (energonic)]

Restart of compiz had this text shown in a command window -
...
Running global cleanup code from study base classes.
ERROR: hook /usr/share/apport/package-hooks/source_xorg.py crashed:
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/apport/report.py", line 186, in _run_hook
    symb['add_info'](report, ui)
  File "/usr/share/apport/package-hooks/source_xorg.py", line 682, in add_info
    attach_3d_info(report, ui)
  File "/usr/share/apport/package-hooks/source_xorg.py", line 420, in attach_3d_info
    if b'reverting to software rendering' in xorglog:
TypeError: 'in <string>' requires string as left operand, not bytes

[Launchpad Janitor (janitor)]

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

[penalvch (penalvch)]

Peter T Hayward, thank you for reporting this and helping make Ubuntu better.

As per https://wiki.ubuntu.com/Releases, Ubuntu 12.10 reached EOL on May 16, 2014.

Is this reproducible on a supported release?

[Launchpad Janitor (janitor)]

[Expired for mesa (Ubuntu) because there has been no activity for 60 days.]