Testing 4.4-rc6 had the difference in result that after the fan went on max speed (unlike when booting on 3.19.0-25) and hdd was working - after a while the blue XUbuntu screen with the spinning wheel came up. After that the screen went black again and hdd stopped.
4.3.3 was same result but without the blue XUbuntu screen. ** Tags added: kernel-bug-exists-upstream kernel-bug-exists- upstream-4.3.3 kernel-bug-exists-upstream-4.4-rc6 ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1529381 Title: Updating 14.04.3 to latest updates renders system unbootable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1529381/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs