Public bug reported: Binary package hint: xserver-xorg-video-ati
My laptop screen (1680x1050, HP Compaq 6715b, AMD RS690M/X1250, AMD Turion 64 X2 TL-60) flickers when CPU frequency is at 800MHz (powersave or ondemand mode). Flickering occurs when screen content changes, for example switching between windows, moving windows, website with flash animation or scrolling in terminal window. Flickering occurs no matter whether desktop effects are enabled/disabled, or DRI is enabled/disabled (http://dri.freedesktop.org/wiki/ATIRadeon). Tried several xorg.conf configurations. Tried 'Option "DisplayPriority" "HIGH"' (http://linux.die.net/man/4/radeon). Nothing helped. Flickering stays. Flickering can be significantly reduced by setting CPU frequency to min 1600MHz or by reducing screen resolution (over display preferences). Found another bug-report with the same issue: https://bugzilla.redhat.com/show_bug.cgi?id=463023 --->same chipset, same problem There are several bug-reports with flickering issue, for example: https://bugs.launchpad.net/xserver-xorg-driver-ati/+bug/318325 --->flickering reduces while CPU is in use ProblemType: Bug Architecture: i386 DistroRelease: Ubuntu 9.04 Package: xserver-xorg-video-ati 1:6.12.1-0ubuntu1 ProcEnviron: LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersion: Linux version 2.6.28-11-generic (bui...@palmer) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #38-Ubuntu SMP Fri Mar 27 09:00:52 UTC 2009 SourcePackage: xserver-xorg-video-ati Uname: Linux 2.6.28-11-generic i686 ** Affects: xserver-xorg-video-ati (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 -- [X1250] screen flickes when CPU is at low frequency https://bugs.launchpad.net/bugs/351291 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
