On Sat, Apr 04, 2009 at 08:13:52PM -0400, Sanjoy Mahajan wrote:
I'm pretty certain that what you're seeing is already reported upstream: https://bugs.freedesktop.org/show_bug.cgi?id=17805I 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.
I'm guessing that the exact behaviour is dependent on the display hardware. I've seen the same problem manifest itself in slightly different ways when I've had the same computer (with the same driver) hooked up to a couple of different TV's via HDMI. Some react like the HDMI cable had been physically disconnected and reconnected while at least one TV never showed any (visible) problems at all...
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.
I'm using the intel driver from the experimental repo on a system otherwise using unstable without any ill effects. The problem is that even the experimental version is too old (2.6.1). Upstream has had a large number of bug fixes since then (most importantly to me - XV tearing fixes and the sync fixes we're discussing right now), so I'm hoping a more recent version will appear in experimental or unstable soon.
-- David Härdeman