Here is the dmesg when acpi=off has been used in grub ** Attachment added: "dmesg with ACPI disabled" http://librarian.launchpad.net/4962057/acpi_disabled.txt
-- ACPI Broken on Sony Vaio - System Unusable https://launchpad.net/bugs/70166 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs