System completely locked up - requires forced shutdown

[Mike]

This isn't the first time this has happened in 13.10 for me, but it's the first time since I performed a fresh install. I was hoping the previous lockups were caused by an upgrade snaffu since I had upgraded from 13.04 previously but apparently not.

This is as serious a fail as I can imagine (without actually CAUSING hardware damage), so I hope this gets sufficient attention.

I had several windows open last night, including terminal (with X11 forwarding), firefox, reimanna, text editor, etc. The screen was black this morning, but wouldn't wake up. I could see the mouse cursor move, but all else was black. The arrow of the mouse would turn into a 'hand' at certain parts of the screen, as if it was aware that it was hovering over a link in Firefox.

Switching to tty2 I attempted to kill processes until the desktop came back. I killed compiz two times and each time when switching back to tty7 I was able to see graphics on the screen. The first time I saw my unlocked desktop for a brief moment; and the second time it presented me a login box. I entered my pw and the screen went black again. I killed compiz again and immediately afterwards the entire workstation was unresponsive as in I could not switch between tty's anymore so was forced to hard-power off the machine.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: compiz 1:0.9.10+13.10.20131011-0ubuntu1
ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7
Uname: Linux 3.11.0-14-generic x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.12.5-0ubuntu2.1
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Fri Dec 13 08:27:20 2013
DistUpgraded: Fresh install
DistroCodename: saucy
DistroVariant: ubuntu
DkmsStatus: virtualbox, 4.2.16, 3.11.0-14-generic, x86_64: installed
GraphicsCard:
 Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e12] (rev 03) (prog-if 00 [VGA controller])
   Subsystem: Dell Device [1028:0276]
   Subsystem: Dell Device [1028:0276]
InstallationDate: Installed on 2013-12-05 (7 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: Dell Inc. OptiPlex 960
MarkForUpload: True
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.11.0-14-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/03/2010
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A08
dmi.board.name: 0Y958C
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 6
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA08:bd08/03/2010:svnDellInc.:pnOptiPlex960:pvr:rvnDellInc.:rn0Y958C:rvrA00:cvnDellInc.:ct6:cvr:
dmi.product.name: OptiPlex 960
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.46-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.14.3-3ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
xserver.bootTime: Fri Dec 13 08:24:16 2013
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input Logitech USB Optical Mouse MOUSE, id 8
 input Dell Dell QuietKey Keyboard KEYBOARD, id 9
 input Dell WMI hotkeys KEYBOARD, id 10
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 16459
 vendor DEL
xserver.version: 2:1.14.3-3ubuntu2