Here's a log from a freeze after adding the debug instruction into Xorg.conf - copied the log file on reboot by launching into recover mode and dropping to root shell, so should be the last log information from the dead X session.
** Attachment added: "x_crash_log_post_debug" http://launchpadlibrarian.net/31290153/x_crash_log_post_debug -- UXA Sporadic Freezes on Sony Vaio with 855GM https://bugs.launchpad.net/bugs/423663 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-intel in ubuntu. _______________________________________________ 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