Bug#522226: xserver-xorg-video-intel: screen briefly flashes/flickers a few times an hour

[Sanjoy Mahajan <sanjoy@MIT.EDU>]

> I'm pretty certain that what you're seeing is already reported upstream:
> https://bugs.freedesktop.org/show_bug.cgi?id=17805

I just read through that thread.  It looks similar but I'm not too sure.
The reports there were of the whole display blanking for a (short)
while.  Mine doesn't go blank.  Instead a portion of it jitters rapidly
sideways, then recovers (all under 0.1 seconds).  Seen out of the corner
of the eye, it looks like a flash.

But it seems similar to those reports in that sync timings are a likely
culprit.

I'll either wait for a new driver to make it into Debian unstable, or
compile 2.5.1 + patch myself.  Is it reasonable to try the version in
'experimental'?  That seems like it would be a big change to the xorg
file or package layout, so I was a bit worried about using those
packages.

By the way, I just saw the same flash now running 2.6.27.4, so the
problem is not a kernel problem (or not only a kernel problem).  I
wonder why I didn't notice it before though.

-Sanjoy