I agree with Jarosław's comment #29, that this looks like http://wiki.openchrome.org/pipermail/openchrome- devel/2012-August/000737.html you can see the i2cProbeAddress call in the backtraces from both Lars and Michael.
** Changed in: xserver-xorg-video-openchrome (Ubuntu) Status: Confirmed => Triaged -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-openchrome in Ubuntu. https://bugs.launchpad.net/bugs/1041625 Title: X not starting after install [openchrome] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-openchrome/+bug/1041625/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp