HDMI looks terrible

[calvol]

Originally Posted by sdv5

Here's what to do. I've had Samsung DLP and LED TVs, and they both handle computer input the same way. There is one special HDMI/DVI input on the back of your TV that is intended for computer hook-up. You need to connect your Mini to that HDMI input. Then in the Samsung set-up menu, you need to rename that input as PC. Once you do that, your TV will be able to handle the video signal from the Mini using correct color space and 1:1 pixel mapping. You will not need to scale the picture on the Mini. You will notice that the image will just snap in, producing very sharp picture with perfectly legible text. Anything else will give you subpar picture.

My Samsung UN40C6300 maps "PC" input as a VGA source, and "HDMI" input as HDMI source.

[Negritude]

Make sure your monitor is in PC or Computer mode and/or that overscan is disabled (set things to "just scan", as a poster said above). The monitor is being detected as a TV when connected via HDMI, which causes the poor picture.