I am having the some issues: poor pic quality (especially text), and black frame around pic when using HDMI from my PC to my TV. I am running an ATI 3850 with WinXP MCE. My TV is a Mistu 37" (model LT-37131) which has a DVI (labelled PC) and two HDMI inputs. I also have a Denon 2309 receiver which I use for audio and HDMI upconversion/switching.
So.....with DVI straight from PC to TV I get a beautiful picture. With HDMI (either through the Denon or straight to the TV), I get the afore-mentioned degredation. Could I live just fine with the DVI connection? Of course, but half the reason I got this particular receiver was to reduce the cabling to the TV and to avoid having to switch inputs on both it and the receiver.
I've read about people with the same issue with samsung TVs. Their solution is to change the label on the input to PC or DVI. This actually makes alot of sense as it seems to be an issue of the TV's misinterpretation/modification of the signal coming in. As soon as it is told to expect a PC's output, it responds correctly (probably by not doing anything to the signal), and, viola! Nice crisp text, etc.
Unfortunately for my situation, I have no such convenient recourse. My TV doesn't seem to have the ability to anticipate a PC signal on either of the two HDMIs. And while I have adjusted the overscan to get a full screen pic, the quality, or lack thereof, is too much to deal with on a daily basis.
Point is this: if there is anyone out there familiar with the Mitsu settings and/or knows some way to clear this issue up, I would much appreciate it!
Sorry for the long-winded post =)
KaDime