Q: Can someone add a section about this? Is it an alternative to ACPID? A: No it's actually a kernel thread that is running due to an acpi module that is loaded into the kernel, like "thermal" or "battery". You can use the kernel argument noacpi in grub to disable acpi in the kernel.
Q: How do you keep the screen blanked when an external mouse is plugged in? Screen will blank when lid is closed, but if you move the mouse it will light up again and you'll see the light coming through the cracks. --VitaminJ 05:32, 18 February 2011 (EST)