Comment 23 for bug 274575

I have been seeing this behavior in Firefox ever since upgrading Ubuntu from Intrepid to Jaunty, readily reproducible by zooming out or viewing a web site that contains scaled images. I'm pretty sure I had the same version of Firefox both before and after the upgrade; I believe the change in behavior may have been triggered by a change in video driver configuration, from the "fglrx" video driver to the "radeon" driver; note that I am not using the "intel" video driver like the previous commenter, so this bug does affect more than just "intel" users. As above, attempting to set XAANoOffscreenPixmaps doesn't help, and results in a message that the option is being ignored, probably because the X server claims to be using EXA and not XAA. This is a 64-bit system, in case that turns out to matter.

I'd readily switch back to "fglrx" but so far my attempts to do so have resulted in a completely unusable system, for (what I assume are) unrelated reasons. I will verify that Option "NoAccel" makes the symptoms go away and follow up if it fails to behave as expected, but I fear that's not likely to be a viable long-term workaround for performance reasons. This rendering glitch is a serious problem for me as I use this machine for web design, among other things.

If anyone has run across any kind of viable workaround for this problem, or has a suggestion of something to try, I'm sure I'm not the only one who would enjoy hearing about it!