There are no shadows in the windows when ""Sandy Bridge New Acceleration"" is enabled, with UXA acceleration the problem does not appear. Hardware: Processor: Intel Core i7-2630QM @ 2.00GHz (8 Cores), Chipset: Intel 2nd Generation Core Family, Memory: 4096MB, Graphics: Intel 2nd Generation Core Family IGP Software: OS: Ubuntu 11.10, Kernel: 3.2.0-3-generic (x86_64), Desktop: Unity 4.24.0, Display Server: X Server 1.11.2.901 (1.11.3 RC 1), Display Driver: intel 2.17.0, OpenGL: 2.1 Mesa 7.12-devel
Please include a couple of snapshots and you Xorg.log so that I have some clue as to what you mean.
Created attachment 54202 [details] With SNA enabled Screenshot with SNA enabled
Created attachment 54203 [details] With SNA disabled Screenshot with SNA disabled
Created attachment 54204 [details] Xorg log Xorg log
That was a slightly more subtle bug than the one I was thinking of: commit 874c722c86b06ac0aa10e6943d3faf76fcb751be Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Thu Dec 8 12:07:28 2011 +0000 sna: Beware flushing partial buffers before they are written A partial buffer is considered finished upon the next batch submission, so one needs to be careful that it is completely written to before such an event is triggered. move-to-cpu is such a trigger as demonstrated by the picture fixup routine for handling convolution filters. Reported-by: Victor Machado <machado.prx@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=43607 Signed-off-by: Chris Wilson <ickle@crestline.(none)>
Very thanks Chris, the problem was resolved.
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