I'm seeing the same thing with a Y450. Happens to me even when on AC power with the battery in though - every other report I've seen says battery only. If I take the battery out and run on AC power only, everything works just fine. Battery + AC = panic.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/775950 Title: fixing recursive fault but reboot is needed! upon boot without AC (only battery) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs