Hi I see the same problem with Ubuntu 10.10 & 11.04 - any status on the bug?
ThinkPad W520 4284-49g (Nvidia Quadro 2000M, 16 Gb RAM, Nvidia 280.13) regards Flemming -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/776999 Title: [Lenovo W520] laptop freezes on ACPI-related actions To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/776999/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs