I am having the same issue on a Dell Latitude e5520m running Ubuntu 11.04 with gnome classic (I did not test this using Unity).
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Dell Device 049a Flags: bus master, fast devsel, latency 0, IRQ 42 Memory at e2800000 (64-bit, non-prefetchable) [size=4M] Memory at d0000000 (64-bit, prefetchable) [size=256M] I/O ports at 8000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915 -- 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/772925/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs