Hallo, thanks god I'm not alone
i'm having the SAME problem, but i have Dell xps16 and samsung which supports full HD, but whent connected via HDMI it just looks GENERICS (same as you described), i'm tired reading everything what is posted on the internet but no one can answer i found this http://analogbit.com/node/23 but i dont understand a s*** what is written here, couse it sound too difficult to be the problem. I think it might be the drivers, i dont belive that new graphic card might be incapable to view full hd. mine is RADEON® HD 3670 512Mb.
Maybe someone help us.