Created attachment 68357 [details] Picture of corrupted cursor I'm using a ATI Radeon HD 4350 with x.org 1.12.3.902 (1.12.4 RC 2) on Debian testing. I'm running a configuration with two monitors. Every once in a while, I experience mouse cursor corruption when moving the cursor from one screen to the other. The cursor then looks like in the attached photo. I order to get it back to normal, I have to move the cursor several times from one monitor to the other. There seems to be a specific path that I need to take, but I cannot find out which one it is exactly. The problem does not appear when specifying 'Option "SWcursor"' in xorg.conf.
Created attachment 68358 [details] Xorg.log
Created attachment 68359 [details] xorg.conf
Addendum: the path that seems to cause corruption goes from about 56 pixes above the lower left corner of one monitor to the lower right corner of the second monitor. I suspect the problem may be related to the two monitors having different vertical resolutions (1024 vs 1080).
Created attachment 68360 [details] Picture of corrupted cursor
What kernel are you using? Make sure it has this patch: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=f60ec4c7df043df81e62891ac45383d012afe0da
I'm using 3.2.0 from Jul 23, so I believe I have the fix. Is there a way to know for sure?
(In reply to comment #6) > I'm using 3.2.0 from Jul 23, so I believe I have the fix. It's unlikely, as the fix was only backported to the upstream 3.2 stable branch on August 2nd. > Is there a way to know for sure? Sure, inspecting the source code for your kernel. :)
On 10/10/2012 09:39 AM, bugzilla-daemon@freedesktop.org wrote: > *Comment # 7 <https://bugs.freedesktop.org/show_bug.cgi?id=55819#c7> on > bug 55819 <https://bugs.freedesktop.org/show_bug.cgi?id=55819> from > Michel Dänzer <mailto:michel@daenzer.net> * > > (In reply to comment #6 <show_bug.cgi?id=55819#c6>) >> I'm using 3.2.0 from Jul 23, so I believe I have the fix. > > It's unlikely, as the fix was only backported to the upstream 3.2 stable branch > on August 2nd. > >> Is there a way to know for sure? > > Sure, inspecting the source code for your kernel. :) You're right, the patch wasn't included. Luckily it applies cleanly though. I'm rebuilding 3.2.0 with the patch now. Will report back if the problem occurs again. Best, -Nikolaus
I can confirm that this bug (with the exact same corruption shown in the screenshot) is still occurring on Linux 3.8.0-29-generic. Additional information: $ uname -a Linux 91KK 3.8.0-29-generic #42~precise1-Ubuntu SMP Wed Aug 14 16:19:23 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux $ lsb_release -rd Description: Ubuntu 12.04.3 LTS Release: 12.04 $ fglrxinfo display: :0 screen: 0 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: AMD Radeon HD 6500M/5600/5700 Series OpenGL version string: 4.2.12002 Compatibility Profile Context 9.012
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