I'm on 7.1 Prerelease refreshed a few days ago. I've noticed that
Firefox 3 (3.0.4, but 3.0.3 was the same) displays snippets from ones
desktop on some webpages (yahoo and youtube being the 2 most recent).
Image rendering was optimized in Firefox 3, so it breaks with a lot
of xservers (seems as if some pixmap rendering code is broken in X
and firefox triggers that problem).
Try setting Option "XaaNoOffscreenPixmaps" to "true" in the "Device"
section of your xorg.conf.
Thank yo so much for this suggestion.
I have been annoyed by this odd problem since I started using Firefox3
and this finally make things work correctly. I think this needs to be in
a FAQ somewhere until/unless the Xorg driver is fixed.
In any case, I was seeing this with an ATI Radeon X300 M22 graphics
chipset. I don't seem to see it with my nVidia GeForce 7800 GT based
system. I don't THINK I see it with my old MGA Matrox G450 , but I
won't have my eyeballs in front of that system until next month, si I am
Anyone seeing this with any other graphics device that does not use the
The Radeon X 1650 Pro [RV535] has this problem (using XAA). The Radeon
HD 3450 [RV620 IIRC] (which doesn't support XAA or EXA yet) does not
display the problem. I tested it with both the ati and the radeonhd
driver. They both gave the same result.