Comment 26 for bug 311895

I have used the suggestion in https://bugs.launchpad.net/bugs/311895
since yesterday (Option "FramebufferCompression" "off"), and that *seems* to do
the trick. I want to test it a little longer before fully confirming,
especially since the most recent X.org stopped logging the underruns in
Xorg.0.log, and I got too used to the occasional screen flicker, so I might
well have ignored them.

But my screen went black (or brown, or white) irrecoverably after a day or two
without that option. If that doesn't happen any more either, I'll report back here.