I should have mentioned that my mobo is a Gigabyte DS3 motherboard and ACPI is surely supported. http://tw.giga-byte.com/Products/Motherboard/Products_Overview.aspx?ProductID=2314
But I will try the boot option and see if it helps. -- Pressing power button hangs the system with 2.6.15-20-686 https://bugs.launchpad.net/bugs/40243 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs