xrandr: Failed to get size of gamma for output default Screen 0: minimum 2160 x 1440, current 2160 x 1440, maximum 2160 x 1440 default connected primary 2160x1440+0+0 (0x522) normal (normal) 0mm x 0mm Identifier: 0x521 Timestamp: 16727 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 2160x1440 (0x522) 298.598MHz *current h: width 2160 start 0 end 0 total 2160 skew 0 clock 138.24KHz v: height 1440 start 0 end 0 total 1440 clock 96.00Hz