I recently built a new computer and am having an incredibly difficult time getting the graphics card (XFX Radeon 5770) to function properly with Windows 7, 64-bit (via HDMI).
Everything looks a bit blurry, especially the text. HDMI, DVI, and VGA connections all look bad. VGA looks a little better, but not as clear as HDMI wiith my Windows XP machine, and I also want to output sound.
A few notes:
* Running the the most recent ATI drivers (10.6)
* Pixel ratio set to 1:1 on the TV
* Using native resolution (1080p/60hz, also tried 59hz without improvement)
* Overscan set to 0%
* ClearType text has been adjusted
* Tried older drivers: 10.5, 10.4, 9.8, and 9.1 without success
My 5 year old Windows XP Dell, with a $40 Radeon 4350 card, has no problem producing crisp text via HDMI on this same HDTV. I tried the same 4350 card in my new Windows 7 computer and experienced the same problem as with the 5770.
The only progress that I've been able to make in narrowing down the problem is that although the output settings are set to be identical in both my XP and Windows 7 computers (1080p/60hz, 32-bit color), my HDTV (Sony Bravia KDL-46w5100) is receiving different signals. I know the signals are different because the TV is treating them differently, interpreting the XP signal as a PC signal
and the Windows 7 signal as a video signal
. Further evidence that the signals are being output differently: XP display info
, W7 display info
According to Sony's tech support agent, the TV is actually intended to treat 1080p/60hz computer signals via HDMI as "Video Signals," so technically the TV is treating the XP signal incorrectly, even though the picture quality in XP is outstanding and poor within Windows 7.
Does anyone have any idea why a 1080p/60hz signal would be output differently in XP vs. Windows 7? Or more generally how to fix my problem?