xrandr: Failed to get size of gamma for output default Screen 0: minimum 1280 x 800, current 1280 x 800, maximum 1280 x 800 default connected 1280x800+0+0 (0x521) normal (normal) 0mm x 0mm Identifier: 0x520 Timestamp: 151956 Subpixel: horizontal rgb Clones: CRTC: 0 CRTCs: 0 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: non-desktop: 0 supported: 0, 1 1280x800 (0x521) 0.000MHz *current h: width 1280 start 0 end 0 total 1280 skew 0 clock 0.00KHz v: height 800 start 0 end 0 total 800 clock 0.00Hz