[Mesa-dev] KWin and Mesa

[Mario Kleiner]

On Apr 23, 2011, at 1:32 AM, Ian Pilcher wrote:

> On 04/20/2011 01:00 PM, Kenneth Graunke wrote:
>> Please do let us know about any issues you come across. (If you  
>> can work
>> around them, you can report them...)  Even just a ping saying  
>> "Someone
>> told me KWin was broken on <platform/version>" is helpful.  We  
>> have the
>> hardware and can always try to reproduce the problem, even if you  
>> aren't
>> able to.
>
> https://bugs.freedesktop.org/show_bug.cgi?id=32534
> https://bugs.kde.org/show_bug.cgi?id=252817
> https://bugzilla.redhat.com/show_bug.cgi?id=691084
>

At least the visual corruption with compositing that is described in  
these reports matches this bug very well:

<https://bugs.freedesktop.org/show_bug.cgi?id=35452>

The bug is in the DRI2 implementation of the x-server and should  
affect any compositor when kms page flipping is enabled. x-servers  
1.8, 1.9, (afaik) 1.10 x-server's would be affected. If you follow  
this thread <http://lists.x.org/archives/xorg-devel/2011-March/ 
020716.html> it points to a proposed patch by Michel Daenzer, and a  
refined version by Keith Packard. I don't know if a version has  
landed in master already, but testing it would help to get it there  
and maybe to get it merged to 1.9 and 1.10.

-mario


> -- 
> ====================================================================== 
> ==
> Ian Pilcher                                          
> arequipeno at gmail.com
> "If you're going to shift my paradigm ... at least buy me dinner  
> first."
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> ==
>
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Mario Kleiner
Max Planck Institute for Biological Cybernetics
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