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[Launchpad Bug Tracker <1264270@xxxxxxxxxxxxxxxxxx>]

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Since upgrading the kernel along with other automatic software updates
(about 200MB download) the video of this system regularly blanks after a
few minutes of operation or shows a black screen with white text having
machine gibberish that looks like a log file with seconds at the left
edge. Resetting the display screen to never turn off automatically
doesn't help.  Unplugging the laptop's monitor and plugging it in again
will usually restore normal functioning, but only for a while.

This sort of problem occurred the previous two times automatic kernel
upgrades were installed and was fixed by a display manager update that
followed about  a week later, at least in one case.  Maybe three times
is a charm and the underlying problem will now be solved.

Thanks.

I'm filing another bug regarding a crash that occurred during one of the
video hang-ups when monitor unplugging didn't help.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: xorg 1:7.7+1ubuntu4
ProcVersionSignature: Ubuntu 3.8.0-34.49-generic 3.8.13.12
Uname: Linux 3.8.0-34-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.9.2-0ubuntu8.5
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: Thu Dec 26 15:30:39 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:2102]
InstallationDate: Installed on 2013-06-17 (191 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: ASUSTeK COMPUTER INC. K55A
MarkForUpload: True
ProcEnviron:
 LANGUAGE=en_IN:en
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_IN
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-34-generic root=UUID=440d36e9-d062-454d-bbc6-f718f29b97ad ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/20/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: K55A.404
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: K55A
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrK55A.404:bd08/20/2012:svnASUSTeKCOMPUTERINC.:pnK55A:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnK55A:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: K55A
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
version.compiz: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.43-0ubuntu1.1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.7-1ubuntu2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.7-1ubuntu2
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6.2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4.3
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Thu Dec 26 15:10:03 2013
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.13.3-0ubuntu6.2
xserver.video_driver: intel

** Affects: linux (Ubuntu)
     Importance: Medium
         Status: Incomplete


** Tags: amd64 apport-bug compiz-0.9 latest-bios-407 needs-upstream-testing raring regression-release third-party-packages ubuntu
-- 
Regular black screens since automatic kernel upgrade
https://bugs.launchpad.net/bugs/1264270
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