Bug 21399

i'm using current git head from main xf86-video-ati branch. 

when i've updated it yesterday most images in firefox started to look as if they are covered 90% with black rectangle (there is a narrow visible vertical stripe of the picture, at the left edge, or sometimes in the middle; the rest is black).

the behavior is irregular, sometimes the images are missing, or invisible (probably covered with a rectangle that has a color of the background of the webpage). 

reverting to commit bbfd4625478e37d10fd58b23f46153f349370a52 seems to help. i'll try to narrow it more precisely in a few hours.

i'm using xorg-server 1.5.3 with git ati driver. 

my graphics card is 

05:00.0 VGA compatible controller: ATI Technologies Inc RV515 PRO [Radeon X1300/X1550 Series]

i'll provide screenshots, if needed to ilustrate the issue (assuming the problem will be visible on the screenshots). 

adding Option  "XAANoOffscreenPixmaps" "true" in xorg.conf does not seem to help (which is what i found when looking for solution).

i've only seen the problem in firefox, video playback and image browsers do not seem affected.