This is a Dell Latitude D810, with an ATI Mobility Radeon X300. Ubuntu version is Edgy Knot 3. I already told you in the bug report, that the machine freezes because only power off helps.
-- Hibernation and suspend is not working https://launchpad.net/bugs/61480 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs