Sorry, I got sidetracked while getting a set of logs. However, some (yet slightly vague) findings may be useful - even if debugging gets maybe even harder:
Firstly: the computer (BIOS or whatever) behaves differently when external power is connected or only battery used, and secondly: it behaves differently depending on the last state of the vgaswitcheroo BEFORE the reboot. I need to do more testing regarding the former (probably frequency of crashes higher with external power), but the latter seemed to me pretty consistently only crashing after "echo OFF > /sys/kernel/debug/vgaswitcheroo/switch". I did yesterday a kernel-update to 2.6.38-8, I'll try to reproduce the findings and will try to see if anything changed in the behaviour. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/727620 Title: [Radeon HD 5650 and 5470] Driver crash during recovery boot and in normal boot (Regression from 2.6.38-3 to -4) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs