Comment 0 for bug 1023916

Answers to important questions on https://wiki.ubuntu.com/X/Troubleshooting/Freeze

Q: Have you experienced just one or a series of lockups?
A: I have had several freezes. They occur approximately once a week. They seem to be randomly distributed (e.g. freeze ~ poisson(rate = 1/week)) although I can not rule out that there may be some auto-correlation.

Q: Under what conditions does it seem most likely to reproduce?
A:
* only at boot time: NO
* when resuming from suspend or hibernate: NO
* only when compositing: NO (also occurs in "classic mode")
* when changing resolution or enabling/disabling monitors: NO
* when screensaver or power saving mode kicks in: NO
* visiting particular web pages or loading particular files: PERHAPS, but I can not reproduce it. It has definitely happened multiple times when I was using the web browser (both firefox and chrome at the same time) and it has also happened more than once when a) editing/asking questions at stackexchange site and b) editing figures at lucidchart.com
* switching betwen desktops: NO
* when performing a specific sequence of actions: NO. I have not been able to reliably reproduce this freeze; as suggested at http://askubuntu.com/q/156925/8039, I have been unsuccessful trying to reproduce the freeze by a) doing a lot of rapid work combined with changing the zoom levels at lucidchart.com; by rapidly opening / closing apps and switching desktops, and also by runing do_chws_loop, do_glx_loop, do_monitor_disable_loop, do_screensaver_loop, do_video_loop, and do_vtswitch_loop in /usr/share/xdiagnose/workloads/.

Additional steps:

The file regdump_good.txt has the output from "avivotool regs all"
I tried gathering the output from this command during the freeze (via ssh) but did not realize that I needed to run as root, so the file is empty.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xorg 1:7.6+12ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-25.40-generic 3.2.18
Uname: Linux 3.2.0-25-generic x86_64
NonfreeKernelModules: fglrx
.tmp.unity.support.test.1:

ApportVersion: 2.0.1-0ubuntu8
Architecture: amd64
CompizPlugins: [core,bailer,detection,composite,opengl,decor,mousepoll,vpswitch,regex,animation,snap,expo,move,compiztoolbox,place,grid,imgpng,gnomecompat,wall,ezoom,workarounds,resize,fade,unitymtgrabhandles,scale,session,unityshell]
CompositorRunning: None
Date: Thu Jul 12 09:31:15 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 fglrx, 8.960, 3.2.0-25-generic, x86_64: installed
 vboxhost, 4.1.10, 3.2.0-24-generic, x86_64: installed
 vboxhost, 4.1.10, 3.2.0-25-generic, x86_64: installed
ExtraDebuggingInterest: Yes, whatever it takes to get this fixed in Ubuntu
GpuHangFrequency: Once a week
GpuHangReproducibility: Seems to happen randomly
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
 Advanced Micro Devices [AMD] nee ATI RV610 [Radeon HD 2400 XT] [1002:94c1] (prog-if 00 [VGA controller])
   Subsystem: Dell Optiplex 755 [1028:0d02]
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
JockeyStatus:
 xorg:fglrx_updates - ATI/AMD proprietary FGLRX graphics driver (post-release updates) (Proprietary, Disabled, Not in use)
 xorg:fglrx - ATI/AMD proprietary FGLRX graphics driver (Proprietary, Enabled, In use)
MachineType: Dell Inc. OptiPlex 755
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-25-generic root=UUID=a602f70d-99c6-43bc-a8d3-32a723a6904c ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UnitySupportTest: Error: command ['/usr/lib/nux/unity_support_test', '-p', '-f'] failed with exit code 1: Error: no composite extension
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/04/2008
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A11
dmi.board.name: 0PU052
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 15
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA11:bd08/04/2008:svnDellInc.:pnOptiPlex755:pvr:rvnDellInc.:rn0PU052:rvr:cvnDellInc.:ct15:cvr:
dmi.product.name: OptiPlex 755
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.7.8-0ubuntu1
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3.1
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.2
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