Good news, at least on my front - it turns out the problem was with the Nvidia driver provided by Ubuntu. I installed EnvyNG (https://launchpad.net/envy) and updated the driver; this resolved my problem.
I'm not sure how many other people this will help, but if it helps anyone, I'll be happy. -- [Hardy] closing lid breaks X (jumping cursor, sluggish, high cpu usage ... ) https://bugs.launchpad.net/bugs/156824 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
