No need to run any bisecting. You can see where the change was with cgit ( https://git.kernel.org/cgit/linux/kernel/git/stable/linux- stable.git/commit/?id=919cf555c04e16dafb1fba56904eb23889a812c3 ). Technically, it's not fixed upstream. They just applied the aforementioned workaround of disabling DPM for Northern Islands until they figure out how to fix it. Another bug report on bugzilla related to the bug can be found here: https://bugzilla.kernel.org/show_bug.cgi?id=68571 which shows how even with kernel 3.14, manually enabling DPM, since it is disabled by default now, with radeon.dpm=1 still causes the problems. In kernel 3.12 and prior, DPM was disabled by default since it was buggy, but for some reason it was enabled by default with 3.13, leading to these problems.
** Bug watch added: Linux Kernel Bug Tracker #68571 http://bugzilla.kernel.org/show_bug.cgi?id=68571 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1297464 Title: 1002:6739 14.04 randomly reboots To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1297464/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
