r300 Xrandr slow rotation performance

[zK]

Michel Dänzer ha scritto:
> On Mon, 2010-01-18 at 13:22 +0100, zK wrote: 
>   
>> Michel Dänzer ha scritto:
>>     
>>> On Sun, 2010-01-17 at 20:06 +0100, zK wrote: 
>>>   
>>>       
>>>> I'm using Ubuntu karmic 9.10 with the open driver from the stable branch
>>>> on a r300 ati x1250 .
>>>>
>>>> When using Xaa acceleration method i get a choppy screen after using
>>>> xrandr to rotate the screen.
>>>>     
>>>>         
>>> I wouldn't expect that to ever get fixed.
>>>
>>>   
>>>       
>>>> Using EXA acceleration resolves the problem but gives me some rendering
>>>> corruption in Firefox.
>>>>     
>>>>         
>>> What kind of corruption? Got a screenshot?
>>>
>>>
>>>   
>>>       
>> There is no corruption in the screenshot after I took it, only when
>> rendering live.
>> I should take a picture with my camera but I don't have the time at the
>> moment.
>>     
>
> That could help clarify the nature of the problem.
>
>   
>> The are black lines going from one side to the other, sometimes just one
>> line,other times one big block line.
>>
>> Also when using the default ati driver shipped with Ubuntu karmic I had
>> the same behaviour with a WHITE LINE ( I'm thinking with XAA
>> acceleration since I didn't touch anything in xorg.conf...) while when
>> using the git stable branch and EXA I get a BLACK LINE.Pretty strange
>> huh?:-)
>>
>> These behaviours seem to appear only when I'm using the Grab and Drag
>> Firefox add-on ( an Add-on that allows finger dragging of web pages for
>> my tablet PC).Maybe scrolling faster than the scroll bar causes this
>> corruption, but looks like a bug in the rendering to me.
>>     
>
> I'm a little confused by the above. Is the corruption permanent or only
> intermittent?
>
>
>   
See this video: http://www.listatrento.com/files/ati.avi