xrandr: Failed to get size of gamma for output default Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080 default connected 1920x1080+0+0 (0x56) normal (normal) 0mm x 0mm Identifier: 0x55 Timestamp: 74996 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 1920x1080 (0x56) 0.000MHz *current h: width 1920 start 0 end 0 total 1920 skew 0 clock 0.00KHz v: height 1080 start 0 end 0 total 1080 clock 0.00Hz