[Help][RS780E][mipsel]Screen corruption sometimes
michel at daenzer.net
Thu Aug 4 01:04:20 PDT 2011
On Don, 2011-08-04 at 14:46 +0800, Chen Jie wrote:
> We're running RS780E on a MIPS64 compatible platform, and encounter
> screen corruption sometimes:
> * Do 'x11perf -compwinwin500' -- Window decoration and the background
> corrupt (http://dev.lemote.com/files/upload/software/temp/x11perf-corrupt.png)
> * Hardware Accelerated video playback(video-pipe branch of mesa) --
> both playback and the desktop:
> - http://dev.lemote.com/files/upload/software/temp/newmobcal1920-playback.png
> - http://dev.lemote.com/files/upload/software/temp/newmobcal1920-desktop-corrupt.png
> - Related thread:
The video decoding corruption may be due to the pipe-video code not
working properly on all hardware yet.
The rest looks like more or less random BO corruption.
> 3. Linux 2.6.36 (64bit), dmesg:
That's a pretty old kernel. Lots of bugs have been fixed since then
which could explain the random corruption.
> Any idea? (BTW, don't know if related, but the bandwidth of separated
> video ram is really low, about 14MB/s for write op)
How do you measure it?
Earthling Michel Dänzer | http://www.amd.com
Libre software enthusiast | Debian, X and DRI developer
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