I have been experiencing this as well. I just (finally) got ubuntu up on my new x201 yesterday (was running into the KMS error, before).
Yesterday I used the laptop all day without a problem, I was working from home so it was just the laptop. Today I brought it into the office and have experienced 2 or 3 freezes today. The differences include: - external display - external keyboard - external mouse I just turned off the visual effects (under appearance) which I guess turns off compiz. I'll report back if that helps. Would anyone like me to attach any log files or other output? -- 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