I tried Bryce's second suggestion of using old kernels. I have two previous versions of 2.6.38 installed, 2.6.38-3-generic and 2.6.38-4-generic. I booted each into recovery and normal mode 4 times, for a total of 16 boots. Here's the number of times the boot was a success, where I either got to the recovery boot menu or gdm, (regardless of whether the screen brightness had to be manually increased from 0, or if the plymouth boot screen displayed).
2.6.38-4-generic, normal: 1 success, 3 failures 2.6.38-4-generic, recovery: 4 successes 2.6.38-3-generic, normal: 4 successes 2.6.38-3-generic, recovery: 3 successes, 1 failure At no time did I see a stack trace like the one I posted, but I've only seen that in recovery mode. (Would it be written somewhere persistent between boots? It's not in /var/log/syslog.) I took more notes on the failures. They're pretty vague and qualitative, but have slightly more detail of what each boot was like. -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-ati in ubuntu. https://bugs.launchpad.net/bugs/727620 Title: [Radeon HD 5650 and 5470] Driver crash during recovery boot and in normal boot _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp

