Can you please run 'echo 0 | sudo tee /sys/modules/drm_kms_helper/parameters/poll' and see if that stops it from periodically blinking?
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1180231 Title: External monitor, occasional blink off, then back on Status in “xserver-xorg-video-intel” package in Ubuntu: New Bug description: Hi , I have Ubuntu 12.04 on my dell vostro 1450 Laptop, with Dell 22" External Monitor. Problem is, External monitor periodically goes black for a half-second. Sometimes times it will be stable, but sometimes this problem is more. someone else reported same issue on ubuntu forums. http://ubuntuforums.org/showthread.php?t=2001274 Thanks ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: xorg 1:7.6+12ubuntu2 ProcVersionSignature: Ubuntu 3.2.0-41.66-generic 3.2.42 Uname: Linux 3.2.0-41-generic x86_64 NonfreeKernelModules: wl .tmp.unity.support.test.0: ApportVersion: 2.0.1-0ubuntu17.2 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell] CompositorRunning: compiz Date: Wed May 15 12:01:44 2013 DistUpgraded: Fresh install DistroCodename: precise DistroVariant: ubuntu ExtraDebuggingInterest: No GraphicsCard: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device [1028:0506] InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MachineType: Dell Inc. Vostro 1450 MarkForUpload: True ProcEnviron: LANGUAGE=en_IN:en TERM=xterm PATH=(custom, no user) LANG=en_IN SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-41-generic root=UUID=1669002d-a4a3-48f0-896d-18e49a7a1f3f ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/31/2011 dmi.bios.vendor: Dell Inc. dmi.bios.version: A02 dmi.board.name: 0KGFK0 dmi.board.vendor: Dell Inc. dmi.board.version: A02 dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: Not Specified dmi.modalias: dmi:bvnDellInc.:bvrA02:bd05/31/2011:svnDellInc.:pnVostro1450:pvrNotSpecified:rvnDellInc.:rn0KGFK0:rvrA02:cvnDellInc.:ct8:cvrNotSpecified: dmi.product.name: Vostro 1450 dmi.product.version: Not Specified dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.7.12-0ubuntu1 version.ia32-libs: ia32-libs 20090808ubuntu36 version.libdrm2: libdrm2 2.4.43-0ubuntu0.0.1 version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.5 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.5 version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.13 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1180231/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
