There was a related bug, fixed with
commit 19bd005056a2083de64753681b96716996e4237d Author: Chris Wilson <email address hidden> Date: Fri Feb 22 12:05:04 2013 +0000
sna: Avoid migrating and making the GPU bo busy prior to mmapping it
References: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/1131134 Signed-off-by: Chris Wilson <email address hidden>
that I thought was already in 2.21.3 and so you had tested it. It is actually in master, so can you try compiling from git and checking if that fixes the issue?
There was a related bug, fixed with
commit 19bd005056a2083 de64753681b9671 6996e4237d
Author: Chris Wilson <email address hidden>
Date: Fri Feb 22 12:05:04 2013 +0000
sna: Avoid migrating and making the GPU bo busy prior to mmapping it
References: https:/ /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- intel/+ bug/1131134
Signed-off-by: Chris Wilson <email address hidden>
that I thought was already in 2.21.3 and so you had tested it. It is actually in master, so can you try compiling from git and checking if that fixes the issue?