I noticed today that I also can't Suspend or Hibernate this box and that when I try to there's a kernel panic from an ACPI exception. Apparently when the kernel detects a Dell GX240 it forces acpi=ht. Apparently this means "Use ACPI boot table parsing, but don't enable ACPI interpreter."
Does Ubuntu not have any fallbacks for non-acpi machines? -- Dell Optiplex GX240 doesn't turn off on shutdown. https://launchpad.net/bugs/41681 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
