I have noticed the exact same problem on my M1210, both with Ubuntu Edgy, and Gentoo, but it only affects the am64-architecture, if i run it in 32-bit arch then the problem is gone, so I'm guessing this is has to be fixed in kernel-level acpi drivers.
-- Notebooks freezes after closing lid or pressing some FN key combination https://launchpad.net/bugs/65027 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
