Re: How to get Full Range RGB from Intel HD Graphics?

I think I found a solution.

I tried this method to force HDMI to CVT-RB, and then the black level become normal, magically.

Linux force 1920x1080 CVT-RB timings (for LG M227 TV Monitor) - William Shallum

My environment:

Intel XEON 1245V3 with P4600 graphics.

Acer GR235H display, connected to computer via HDMI cable and HDMI to DisplayPort converter.

Ubuntu 12.10 LTS