Xorg freeze

[Howard Cheng]

My system crashes every time I attempt to switch user. The whole system hangs and I can't seem to see anything out of the ordinary in the logs relating to this (unless it has to do with bug #877115). When I reported the bug ubuntu-bug says that it detected a GPU crash. That was the only clue I can find.

If anyone wants more information, please let me know what I could do to gather this info.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: xorg 1:7.6+7ubuntu7
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: fglrx
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Sat Nov 5 16:48:33 2011
DistUpgraded: Log time: 2011-11-02 22:46:59.201466
DistroCodename: oneiric
DistroVariant: ubuntu
EcryptfsInUse: Yes
GpuHangFrequency: Several times a day
GpuHangReproducibility: Yes, I can easily reproduce it
GpuHangStarted: Immediately after installing this version of Ubuntu
GraphicsCard:
 ATI Technologies Inc Redwood PRO [Radeon HD 5500 Series] [1002:68d9] (prog-if 00 [VGA controller])
   Subsystem: PC Partner Limited Device [174b:e142]
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
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: Gateway DX4831
ProcEnviron:
 PATH=(custom, user)
 LANG=en_CA.UTF-8
 SHELL=/usr/bin/tcsh
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.0.0-12-generic root=UUID=15a705a5-daa5-4c66-bcca-e517dce91e54 ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
Title: Xorg freeze
UpgradeStatus: Upgraded to oneiric on 2011-11-03 (2 days ago)
dmi.bios.date: 11/17/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P01-A0
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: H57M01
dmi.board.vendor: Gateway
dmi.chassis.type: 3
dmi.chassis.vendor: Gateway
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP01-A0:bd11/17/2009:svnGateway:pnDX4831:pvr:rvnGateway:rnH57M01:rvr:cvnGateway:ct3:cvr:
dmi.product.name: DX4831
dmi.sys.vendor: Gateway
version.compiz: compiz 1:0.9.6+bzr20110929-0ubuntu5
version.fglrx-installer: fglrx-installer N/A
version.ia32-libs: ia32-libs 20090808ubuntu26
version.libdrm2: libdrm2 2.4.26-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 7.11-0ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 7.11-0ubuntu3
version.xserver-xorg: xserver-xorg 1:7.6+7ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.0-1ubuntu13
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20110811.g93fc084-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.15.901-1ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20110411+8378443-1

[Howard Cheng (howard-cheng)]

I should also add that this has happened ever since I upgraded to 11.10 recently.

[Howard Cheng (howard-cheng)]

Steps to reproduce, 100% of the time for me:

1. Log in.
2. Click on my name on the upper right corner.
3. Select any other user.
4. Whole system hangs.

[Thomas Regner (tomreg-tr)]

This or a similar bug affects me too - here is my ubuntu-bug information:

ProblemType: Bug
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Mon Nov 7 10:59:01 2011
Dependencies:
 adduser 3.112+nmu1ubuntu5
 base-passwd 3.5.23
 busybox-initramfs 1:1.18.4-2ubuntu2
 coreutils 8.5-1ubuntu6
 cpio 2.11-7ubuntu1
 cpp 4:4.6.1-2ubuntu5
 cpp-4.6 4.6.1-9ubuntu3
 debconf 1.5.40ubuntu1
 debianutils 4.0.2
 dpkg 1.16.0.3ubuntu5
 findutils 4.4.2-1ubuntu3
 fontconfig-config 2.8.0-3ubuntu2
 gcc-4.6-base 4.6.1-9ubuntu3
 ifupdown 0.7~alpha5.1ubuntu5
 initramfs-tools 0.99ubuntu8
 initramfs-tools-bin 0.99ubuntu8
 initscripts 2.88dsf-13.10ubuntu4
 insserv 1.14.0-2.1
 iproute 20110315-1build1
 keyboard-configuration 1.57ubuntu27
 klibc-utils 1.5.22-1ubuntu2
 libacl1 2.2.51-3
 libattr1 1:2.4.46-3
 libblkid1 2.19.1-2ubuntu3
 libbz2-1.0 1.0.5-6ubuntu1
 libc-bin 2.13-20ubuntu5
 libc6 2.13-20ubuntu5
 libdb5.1 5.1.25-11
 libdbus-1-3 1.4.14-1ubuntu1
 libdrm-intel1 2.4.26-1ubuntu1
 libdrm-nouveau1a 2.4.26-1ubuntu1
 libdrm-radeon1 2.4.26-1ubuntu1
 libdrm2 2.4.26-1ubuntu1
 libexpat1 2.0.1-7ubuntu3
 libffi6 3.0.11~rc1-2
 libfontconfig1 2.8.0-3ubuntu2
 libfontenc1 1:1.1.0-1
 libfreetype6 2.4.4-2ubuntu1
 libfs6 2:1.0.3-1
 libgcc1 1:4.6.1-9ubuntu3
 libgcrypt11 1.5.0-1
 libgl1-mesa-dri 7.11-0ubuntu3
 libgl1-mesa-glx 7.11-0ubuntu3
 libglapi-mesa 7.11-0ubuntu3
 libglib2.0-0 2.30.0-0ubuntu4
 libglu1-mesa 7.11-0ubuntu3
 libgmp10 2:5.0.1+dfsg-7ubuntu2
 libgpg-error0 1.10-0.3ubuntu1
 libice6 2:1.0.7-2
 libklibc 1.5.22-1ubuntu2

ProblemType: Bug
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Mon Nov 7 10:59:01 2011
Dependencies:
 adduser 3.112+nmu1ubuntu5
 base-passwd 3.5.23
 busybox-initramfs 1:1.18.4-2ubuntu2
 coreutils 8.5-1ubuntu6
 cpio 2.11-7ubuntu1
 cpp 4:4.6.1-2ubuntu5
 cpp-4.6 4.6.1-9ubuntu3
 debconf 1.5.40ubuntu1
 debianutils 4.0.2
 dpkg 1.16.0.3ubuntu5
 findutils 4.4.2-1ubuntu3
 fontconfig-config 2.8.0-3ubuntu2
 gcc-4.6-base 4.6.1-9ubuntu3
 ifupdown 0.7~alpha5.1ubuntu5
 initramfs-tools 0.99ubuntu8
 initramfs-tools-bin 0.99ubuntu8
 initscripts 2.88dsf-13.10ubuntu4
 insserv 1.14.0-2.1
 iproute 20110315-1build1
 keyboard-configuration 1.57ubuntu27
 klibc-utils 1.5.22-1ubuntu2
 libacl1 2.2.51-3
 libattr1 1:2.4.46-3
 libblkid1 2.19.1-2ubuntu3
 libbz2-1.0 1.0.5-6ubuntu1
 libc-bin 2.13-20ubuntu5
 libc6 2.13-20ubuntu5
 libdb5.1 5.1.25-11
 libdbus-1-3 1.4.14-1ubuntu1
 libdrm-intel1 2.4.26-1ubuntu1
 libdrm-nouveau1a 2.4.26-1ubuntu1
 libdrm-radeon1 2.4.26-1ubuntu1
 libdrm2 2.4.26-1ubuntu1
 libexpat1 2.0.1-7ubuntu3
 libffi6 3.0.11~rc1-2
 libfontconfig1 2.8.0-3ubuntu2
 libfontenc1 1:1.1.0-1
 libfreetype6 2.4.4-2ubuntu1
 libfs6 2:1.0.3-1
 libgcc1 1:4.6.1-9ubuntu3
 libgcrypt11 1.5.0-1
 libgl1-mesa-dri 7.11-0ubuntu3
 libgl1-mesa-glx 7.11-0ubuntu3
 libglapi-mesa 7.11-0ubuntu3
 libglib2.0-0 2.30.0-0ubuntu4
 libglu1-mesa 7.11-0ubuntu3
 libgmp10 2:5.0.1+dfsg-7ubuntu2
 libgpg-error0 1.10-0.3ubuntu1
 libice6 2:1.0.7-2
 libklibc 1.5.22-1ubuntu2

ProblemType: Bug
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Mon Nov 7 10:59:01 2011
Dependencies:
 adduser 3.112+nmu1ubuntu5
 base-passwd 3.5.23
 busybox-initramfs 1:1.18.4-2ubuntu2
 coreutils 8.5-1ubuntu6
 cpio 2.11-7ubuntu1
 cp...

[Thomas Regner (tomreg-tr)]

First: Sorry for my crappy paste of the ubuntu-bug information in my previous post.

Second: If I switch from unity to unity2d, the freezes do not occur; as the OP has problems with fglrx and I with nvidia (and others e.g. to be found at askubuntu.org with intel graphics) it seems that the context/opengl switches occuring during a user switch are causing the freezes.

If there is anything I can do to provide more useful information please let me know.

kind regards,
Tom

[Howard Cheng (howard-cheng)]

How do I change to unity2d?

[Howard Cheng (howard-cheng)]

Yes, I can confirm that changing to unity2d "fixes" everything. I can switch users just fine.

[Thomas Regner (tomreg-tr)]

It is not a compiz/unity/lightdm bug. The only constant so far in reproducing this error is an opengl based desktop environment.
I tested lightdm/gdm/unity/gnome 3/awesome/unity 2d.

[Launchpad Janitor (janitor)]

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

[Thomas Regner (tomreg-tr)]

changed back to xorg, because fglrx isn't common between affected installes.