I found a recommendation to disable the "Sync to vblank" option, which seems to have solved the issue for me; I wrote about it, along with links to the information I'd found, at http://www.preshweb.co.uk/2011/05/ubuntu-11-04-x-freezing-after- screensaver-active-laptop-lid-closed/ - that may be of use to anyone else experiencing this issue.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/772925 Title: Screen freezes after laptop lid closed for more than 1 minute -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
