Ubuntu
xserver-xorg-video-ati package

  1. Bug #291040
  2. Comment #54

Comment 54 for bug 291040

Revision history for this message
In , Sroland-vmware (sroland-vmware) wrote :

(In reply to comment #45)
> (In reply to comment #44)
> > I'm attaching the patch, hopefully this would help track down the issue.
>
> Interesting; I think this could indicate that
> radeon_do_wait_for_idle()/radeon_do_pixcache_flush() in the DRM are missing
> something for properly waiting for the cache flush to be finished.

Is it possible that cache is idle but memory controller not yet (that is would need to wait for MC_IDLE)? Or another idea, is writing DSTCACHE_CTLSTAT for flushing cache and immediately reading it back guaranteed to give the right answer (busy if there's something to flush) or is there some delay needed?