I am building a Mythbuntu HTPC as my first Linux project and so far so good. I can watch and record TV, but I am having trouble getting the device to power down between TV recordings and I was wondering if there is a way to manage the power management settings in Mythbuntu? I downloaded the Gnome ACPI setting that is normally in System>Preferences (Ubuntu), but there is no Preferences menu in Mythbuntu and I cannot find it anywhere else. I have set the system to shutdown after 10 minutes of inactivity in MythTV, but I haven't filled in any wake up commands in the MythTV setup screen (because I have no idea what a wakeup command is). When I try to manually hibernate the system, it refuses. It says something like "Stopping kernel threads, timed out after 20 secs, one task refusing.
Any suggestions greatly appreciated.