[Bug 5876] big xvideo issues with ATI Radeon RV100 family (Mobility M6 LY, ...)

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https://bugs.freedesktop.org/show_bug.cgi?id=5876          
     




------- Additional Comments From drzeus-bugzilla at drzeus.cx  2006-12-04 11:07 -------
I think I've managed to prove that this is a not a problem with the hardware
flipping buffers at least (provided my test is correct).

What I've done is add a large usleep() (or several in a for loop since something
seems to abort the sleeps) in RADEONPutImage() and/or RADEONDisplayVideo(). The
behaviour I get is consistent with the initial problem, but I can now produce it
on both cards.

My big discovery here is that I can see that the tear stays present for an
entire frame. So it's not a matter of sync problem between RAMDAC and buffer
shuffling, but that the buffer is indeed incorrect for some reason.          
     
     
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