saturated colors and high contrast

I run this monitor for a few days under Linux (Fedora 19) and am thrilled with the "vision". When starting up, there was but then some hurdles that were possibly to drive around, maybe that is also a limitation of my system:
With HDMI cable initially were only max. Offered 1920 px width, although the 2560'er width appeared in the log index X server.
Remedy:
xrandr --newmode "2560x1080R" 181.25 2560 2608 2640 2720 1080 1083 1093 1111 + HSync -vsync
xrandr --addmode HDMI3 "2560x1080R"
Making even the 2560 and HDMI.

With a DisplayPort cable is not necessary here, the native resolution is displayed directly, so also order directly.

Back to Monitor:
Automatic input selection is not available. Anyone wanting to use multiple sources, alternatively, it must explicitly select. I do not have this requirement, since it anyway looks at me as at the Frakfurter Exchange.

The built-in speakers are sufficient for PC use, the existing Brüllwürfel wander now in the basement ...

Another addendum to power consumption:
off: approx 0.3 W
Standby: 0,7 W
Operation: 30 watts, which seems to correlate with the size of bright areas plus / minus 1 Watt and refers to the set of my basic brightness of about 30%. Upon delivery, the monitor is set much too bright.