Forwarding this bug from Ubuntu reporter Julian Lam: http://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/402777 [Problem] monitor turns off after vt switching or on PM events. Regression since Jaunty (driver 2.7.1 UMS) [Original Description] I'm not quite aware of which package this should be reported against, so I am reporting it again xorg in the hopes that someone will come along and re-assign it properly. Thanks! Ever since upgrading to Karmic, I've been having sporadic problems with my monitor turning off at inappropriate times. Test case: Switching to a tty session, and then switching back to tty7. Immediately after, the monitor will blank. Moving the mouse will wake up the monitor again. This is reproducible for me, every time. I've also experienced it once or twice when I've accidentally let my laptop power cord unplug. The switch from AC to battery power seems to have triggered an event, and the monitor turned off. The following events occur in my system log whenever the monitor turns off: Jul 21 19:13:55 julian-4 acpid: client 3279[0:0] has disconnected Jul 21 19:13:55 julian-4 acpid: client connected from 3279[0:0] Architecture: i386 Date: Tue Jul 21 19:09:56 2009 DistroRelease: Ubuntu 9.10 MachineType: Dell Inc. Inspiron 700m Package: xorg 1:7.4+3ubuntu5 ProcCmdLine: root=UUID=6626164e-9234-49d3-b34b-b06289a7ccf3 ro quiet splash ProcEnviron: LANG=en_CA.UTF-8ProcVersionSignature: Ubuntu 2.6.31-3.19-generic RelatedPackageVersions: xserver-xorg 1:7.4+3ubuntu5 libgl1-mesa-glx 7.5~rc4-1ubuntu3 libdrm2 2.4.11-1ubuntu1 xserver-xorg-video-intel 2:2.7.99.901+git20090702.74227141-0ubuntu1 xserver-xorg-video-ati 1:6.12.99+git20090629.f39cafc5-0ubuntu1 SourcePackage: xorg Uname: Linux 2.6.31-3-generic i686 dmi.bios.date: 05/18/05 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: A04 dmi.board.name: 0D9593 dmi.board.vendor: DELL SYSTEM dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrA04:bd05/18/05:svnDellInc.:pnInspiron700m:pvr-1:rvnDELLSYSTEM:rn0D9593:rvr:cvnDellInc.:ct8:cvrN/A: dmi.product.name: Inspiron 700m dmi.product.version: -1 dmi.sys.vendor: Dell Inc. system: architecture: i686kernel: 2.6.31-3-generic
Created attachment 29048 [details] [review] debug dpms activity Weird... I'm not sure why the server would blank when you switched back to it. Would be interesting to know if the X server initiated it (with an ioctl to the kernel) or if the kernel decided to blank the screen by itself. This patch should help track that down, can you give it a try?
Closing due to inactivity. This may have been a separate, ACPI related problem too.
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