Together with screen freezes in https://bugs.launchpad.net/bugs/1267421 I get crashes about twice a day with black screen as shown on the attached screen shot 20140413_132707.jpg.
I found a similar post http://askubuntu.com/questions/408341/bug-unable-to-handle-kernel-paging-request-at-while-installing-ubuntu and tried setting as described here http://ubuntuforums.org/showthread.php?t=1613132 various options:
- nomodeset: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"
stopped from logging into the system. After entering password in the login screen nothing is happening, though the mouse can be moved
- acpi_osi=Linux: GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset acpi_osi=\"Linux\""
seems to have no effect.
Also did a full memory test with memory86+. No problems found.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Это каталог: '/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
NVRM version: NVIDIA UNIX x86_64 Kernel Module 331.38 Wed Jan 8 19:32:30 PST 2014
GCC version: gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
.tmp.unity.support.test.0:
ApportVersion: 2.14.1-0ubuntu2
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
CurrentDesktop: Unity
Date: Sun Apr 13 22:13:49 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
bbswitch, 0.7, 3.13.0-19-generic, x86_64: installed
bbswitch, 0.7, 3.13.0-24-generic, x86_64: installed
nvidia-331-updates, 331.38, 3.13.0-24-generic, x86_64: installed
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, including running git bisection searches
GraphicsCard:
Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller])
Subsystem: CLEVO/KAPOK Computer Device [1558:5106]
NVIDIA Corporation GK106M [GeForce GTX 770M] [10de:11e0] (rev a1) (prog-if 00 [VGA controller])
Subsystem: CLEVO/KAPOK Computer Device [1558:5106]
InstallationDate: Installed on 2014-04-11 (2 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326)
MachineType: Notebook P15SM
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-24-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_osi=Linux
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/06/2013
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 4.6.5
dmi.board.asset.tag: Tag 12345
dmi.board.name: P15SM
dmi.board.vendor: Notebook
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: Notebook
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd08/06/2013:svnNotebook:pnP15SM:pvrNotApplicable:rvnNotebook:rnP15SM:rvrNotApplicable:cvnNotebook:ct9:cvrN/A:
dmi.product.name: P15SM
dmi.product.version: Not Applicable
dmi.sys.vendor: Notebook
version.compiz: compiz 1:0.9.11+14.04.20140409-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-4ubuntu4
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-4ubuntu4
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sun Apr 13 21:55:29 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.0-1ubuntu7
Just restarted the system and got this error without a crash
"Unable to handle kernel NULL pointer dereference at (null)"
and it was caused by palse audio as you can see on the screen shot. The last couple of times it crashed when I playing a song in a flash player online. It happened pretty quickly - during the first 2 songs, so I am suspicious it is to do with audio this time, not video driver.