This is possibly due to some application repeatedly probing the monitor for information. Could you take a look at bug 339200 and bug 344554 and see if you see similarities? Especially, does Xorg.0.log get some lines added to it every time the screen goes black?
** Summary changed: - Jaunty: random screen flashes + [i965] Jaunty: random screen flashes ** Description changed: Binary package hint: xorg I have random screen flashes in Jaunty beta, where the screen goes black for a split second. The bug is sort of the same as the old (and fixed) Bug 91404 but it seems to have resurfaced here in Jaunty. My video card is GMA X 3000 and my driver is xserver-xorg-video-intel. ProblemType: Bug Architecture: i386 DistroRelease: Ubuntu 9.04 Package: xorg 1:7.4~5ubuntu18 ProcEnviron: PATH=(custom, user) LANG=en_CA.UTF-8 SHELL=/bin/zsh ProcVersion: Linux version 2.6.28-11-generic (bui...@palmer) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #40-Ubuntu SMP Fri Apr 3 17:39:51 UTC 2009 SourcePackage: xorg Uname: Linux 2.6.28-11-generic i686 + + [lspci] + 00:00.0 Host bridge [0600]: Intel Corporation Mobile PM965/GM965/GL960 Memory Controller Hub [8086:2a00] (rev 03) + Subsystem: Fujitsu Siemens Computers Device [1734:111f] + 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller [8086:2a02] (rev 03) + Subsystem: Fujitsu Siemens Computers Device [1734:111f] ** Tags added: 965gm intel jaunty xorg -- [i965] Jaunty: random screen flashes https://bugs.launchpad.net/bugs/356510 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
