Re: I miss VGA
"with only a little "ringing" visible on sharp vertical edges."
That "ringing" is due to cable impedance mismatches.
It's possible to work out which end of the cable is causing it if you measure the ghosts and know the timing across the screen, but the take-home lesson is that high quality vga cables with individually shielded 75 ohm feeders inside work better than cheap and nasty (usually thin) ones.
A lot of TVs have no terminators on the VGA line so the signal reflects back to the computer and gets reflected back again (basic RF stuff, same principle as TV ghosting) and the best solution in that instance is to interpose a buffer box with a very short cable to the TV.
This also applies to SCART
That said, VGA(HD DB15) (and scart) are dead standards. If you want to run long cables then use the right kit for the job. HDMI and displayport are both very tolerant if you treat 'em right (buffer units are cheap)
Biting the hand that feeds IT
