Comment 92 for bug 43961

On my server, I tried the kernel parameter (acpi=force) restarted the machine and tried shutting it down. It now works and turns off as expected. I think the bug is more related to the bios and acpi than to Xorg. I know that for some people the option acpi=force still does not work. I am thinking that the issue might be related to something in the bios like power management. **wild guess**

If it helps anyone, my grub boot entry now looks like this.

title Ubuntu, kernel 2.6.15-26-server
root (hd0,1)
kernel /boot/vmlinuz-2.6.15-26-server root=/dev/hda2 ro quiet splash acpi=force
initrd /boot/initrd.img-2.6.15-26-server
savedefault
boot