This is erratic. I have blacklisted "radeon" from autoloading by adding it in /etc/modprobe.d/. I then load it manually in rc.local to be able to turn the card off. I now can boot on battery fine. Or could. Lately I've had boot trouble again, but this might be for Other Reasons.
-- 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] Kernel BUG during recovery boot and in normal boot (Hybrid graphics) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
