Comment 14 for bug 213171

Alex, I notice your symptoms do not match to what the original reporter reported, nor is your hardware an exact match (same video chip, but different vendor), so I think two issues are being improperly conflated here.

It seems someone inadvertently reopened this bug after it had expired, but the requested information was never provided, so I am re-closing it.

Meanwhile, I've forwarded your bug upstream to be examined; it is at https://bugs.freedesktop.org/show_bug.cgi?id=21623 - please subscribe to that bug in case upstream needs more information or wishes you to test something. As I mentioned above, I don't think upstream gives too much attention to 830 chips, so you probably should continue with your bisection work, and provide your findings on the upstream bug so they can help in narrowing down the fix.

You may also want to open yourself a new bug in launchpad for us to keep track of this for Ubuntu. To do this, please run the command 'ubuntu-bug xserver-xorg-video-intel', and make mention of the upstream bug link in your description. This way if upstream produces a patch, we can incorporate it into Ubuntu for you.