Just a comment that I have observed this bug as well, on an X220 T. The test kernel from comment #11 also appears to resolve the problem (so far). I do not have any external USB controllers attached, though, so I'm not sure what the failure path was.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1716747 Title: linux 4.12 - high system load and mouse delays - pipe A vblank wait timed out To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1716747/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
