Comment 13 for bug 447892

I have reported this bug upstream at https://bugs.freedesktop.org/show_bug.cgi?id=24789.

kalessin, please subscribe to the upstream bug report by adding yourself to the CC: field, so that you may provide the intel developers with any additional information that they might need. I think they would be extra happy if you could test an updated Karmic with xorg-edgers (bleeding edge xorg-stuff, https://launchpad.net/~xorg-edgers/+archive/ppa) and possibly also the latest mainline kernel at (currently v2.6.32-rc5/, you only need to install the linux-image deb package for your platform), and provide fresh logs and batchbuffer dumps.

You other guys, it is impossible to say if you have the same bug or not, since there is a whole range of different underlying problems that may lead to a GPU hang. Feel free to follow this bug report and the upstream bug and test any proposed fixes. If your findings are different from kalessin's you are experiencing a different freeze bug and you should file a new bug report.

There are a few workarounds that you may try for the time being. One is testing a newer mainline kernel as mentioned above (low chance of working, but possible). Another is to disable kernel mode setting (KMS) by adding the option nomodeset to the kernel command line ('Esc' at boot to show the Grub boot menu, 'e' to edit the current choice, add 'nomodeset' after 'quiet' and 'splash'). In time there may also be alternative driver versions in the x-retro [1] and x-updates [2] PPAs. Currently, there isn't much there though.

[1]: https://launchpad.net/~ubuntu-x-swat/+archive/x-retro
[2]: https://launchpad.net/~ubuntu-x-swat/+archive/x-updates