To watch Gamecube games in progressive scan, you need to have a gamecube with digital out. Since 2004, Nintendo took the digital port off the gamecube. You can get your gamecube replaced with a model with the port directly from Nintendo.
First problem, sleeping, the SATA bridge doesn\'t sleep properly and therefore doesn\'t come back after resume. The infamous SATA ACPI patch at http://lkml.org/lkml/2005/9/23/97 seems to have solved this for me. I added the patch to the latest FC4 rpm and renamed (to be polite).