xrandr: Failed to get size of gamma for output default Screen 0: minimum 1600 x 900, current 1600 x 900, maximum 1600 x 900 default connected primary 1600x900+0+0 (0x521) normal (normal) 0mm x 0mm Identifier: 0x520 Timestamp: 92538 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: _MUTTER_PRESENTATION_OUTPUT: 0 non-desktop: 0 supported: 0, 1 1600x900 (0x521) 0.000MHz *current h: width 1600 start 0 end 0 total 1600 skew 0 clock 0.00KHz v: height 900 start 0 end 0 total 900 clock 0.00Hz