Forwarding this bug from Ubuntu reporter TommyBoy: http://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/550141 [Problem] Screen flickers/shimmers for half a second from side to side when using notifications, certain compiz effects, using wine, and general desktop usage. The screen connection also resets or goes black sometimes. See this video: http://launchpadlibrarian.net/42260836/flicker.avi [Original Description] This can be reproduced using compiz. Please enable the water effect and put in onto a rain delay of 500 (shift+F9). In about 10 seconds you should see the screen dancing around and flickering. Hard to describe. Can't make screen cast as I also have an xorg slowdown issue. Compiz is just a method to get this bug to show up again and again. This is also happening when I am using notifications launching wine and other general use of the desktop. Also I am hearing a clicking sound from the screen and sometimes getting the message that the screen source disappeared and just reconnected also the screen is going blank sometimes. DistroRelease: Ubuntu 10.04 Package: xorg 1:7.5+3ubuntu1 ProcVersionSignature: Ubuntu 2.6.32-17.26-generic 2.6.32.10+drm33.1 Uname: Linux 2.6.32-17-generic i686 Architecture: i386 Date: Sun Mar 28 10:30:00 2010 DkmsStatus: Error: [Errno 2] No such file or directory InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318) ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-17-generic root=UUID=84de763d-0e1f-4c77-b91a-e32343dae65e ro quiet splash ProcEnviron: LANG=en_GB.utf8SourcePackage: xorg dmi.bios.date: 01/09/2007 dmi.bios.vendor: Phoenix Technologies, LTD dmi.bios.version: 6.00 PG dmi.board.name: NF-MCP61 dmi.chassis.type: 3 dmi.modalias: dmi:bvnPhoenixTechnologies,LTD:bvr6.00PG:bd01/09/2007:svn:pn:pvr:rvn:rnNF-MCP61:rvr:cvn:ct3:cvr: glxinfo: Error: [Errno 2] No such file or directory system: codename: lucid architecture: i686 kernel: 2.6.32-17-generic
Created attachment 34698 [details] XorgLog.txt
Created attachment 34699 [details] CurrentDmesg.txt
Created attachment 34700 [details] BootDmesg.txt
http://start.ubuntu.com/9.10/
This looks like it might be related to the display watermark setup. Does this patch: http://git.kernel.org/?p=linux/kernel/git/airlied/drm-2.6.git;a=commitdiff;h=f46c01208da1881591e3f55ca77d37f54469f8e4 help? When you apply the patch please add: radeon.disp_priority=2 to your kernel command line.
I have seen this since moving from radeonhd to radeon (about 1 year ago). I'm on a gentoo 32 bit, currently kernel 2.6.32, xorg 1.7.6, radeon git, UMS. Never used compiz; I have a radeon mobility X1400. haven't tried the display watermark stuff (don't even know if it applies to UMS).
Is this still an issue with KMS or a newer version of the driver?
No response from original reporter up/downstream for 6/2 years.
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