i was having this same problem with RH8, during the install, after it asks me what resolution i wish to use, i test it and everything seems fine, upon rebooting get either a blank screen or a garbled one when it goes to the login screen, i am using an ati rage 6(radeon) 32mb SRRAM agp video card, had to pop in an old ati rage 128 just so i could use RH8....any help is appreciated.