xrandr: Failed to get size of gamma for output default Screen 0: minimum 1920 x 1200, current 1920 x 1200, maximum 1920 x 1200 default connected 1920x1200+0+0 (0x521) normal (normal) 0mm x 0mm Identifier: 0x520 Timestamp: 301648 Subpixel: unknown 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 1920x1200 (0x521) 0.000MHz *current h: width 1920 start 0 end 0 total 1920 skew 0 clock 0.00KHz v: height 1200 start 0 end 0 total 1200 clock 0.00Hz