Comment 0 for bug 1522976

Sometimes when doing clicking on something in GNOME (or Unity, in 14.04 (haven't tested Unity in 15.10)) like 'Activities' or an application like Maps in the Applications section of Activities, or even 'Details' in the GNOME Control Center (or simply clicking on the Unity Control Center icon in the Launcher in Unity), the computer will freeze and I can't even switch to a login terminal and have to hard shutdown.

This happens frequently although irregularly. I can usually avoid the bug if I don't use Activities or Settings... I don't think this happens using the Nvidia drivers (though I will check) and it doesn't happen with GNOME Flashback (so I presume it's a problem with Nouveau and '3D' desktop environments/window managers).

I'm really sorry I can't be any more specific than this at the moment. Please point me in the right direction to learn more about this bug if need be.

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
Uname: Linux 4.2.0-19-generic x86_64
ApportVersion: 2.19.1-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: GNOME
Date: Fri Dec 4 21:25:58 2015
DistUpgraded: Fresh install
DistroCodename: wily
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 NVIDIA Corporation C73 [GeForce 7100 / nForce 620i] [10de:07e5] (rev a2) (prog-if 00 [VGA controller])
   Subsystem: Acer Incorporated [ALI] Device [1025:027c]
InstallationDate: Installed on 2015-12-04 (0 days ago)
InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Packard Bell imedia S1710
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-19-generic root=UUID=877aeafe-1b23-4d43-8a2c-f245bfd9fb79 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-video-nouveau
UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/06/2009
dmi.bios.vendor: AMI
dmi.bios.version: P01-A3
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: MCP73T-AD
dmi.board.vendor: Packard Bell
dmi.chassis.type: 3
dmi.chassis.vendor: Packard Bell
dmi.modalias: dmi:bvnAMI:bvrP01-A3:bd06/06/2009:svnPackardBell:pnimediaS1710:pvr:rvnPackardBell:rnMCP73T-AD:rvr:cvnPackardBell:ct3:cvr:
dmi.product.name: imedia S1710
dmi.sys.vendor: Packard Bell
version.compiz: compiz N/A
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.64-1
version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4
version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3
xserver.bootTime: Fri Dec 4 21:24:50 2015
xserver.configfile: default
xserver.errors:
 Failed to load module "nvidia" (module does not exist, 0)
 Failed to load module "nvidia" (module does not exist, 0)
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.17.2-1ubuntu9.1
xserver.video_driver: nouveau