I have updated BIOS from ver. A08 to A13 (Dell Studio 1555) and it solved the problem. It is again fun to use Ubuntu on my laptop. Thank you.
** Changed in: linux (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1075512 Title: Laptop freezes when lid closes 12.10 (same in 12.04) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1075512/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs