Jon: Just to add to your findings. I discovered that with or without external screen, freezes do happen. I am running proposed archives so I noticed an update to X today. That might help the situation. So far so good but it has been a few hours only.
-- X locks up on Thinkpad X201 i5 Laptop https://bugs.launchpad.net/bugs/575186 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs