xrandr: Failed to get size of gamma for output default Screen 0: minimum 800 x 600, current 1024 x 768, maximum 1024 x 768 default connected primary 1024x768+0+0 (0x3d5) normal (normal) 0mm x 0mm Identifier: 0x3d4 Timestamp: 23909 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: 1024x768 (0x3d5) 0.000MHz *current h: width 1024 start 0 end 0 total 1024 skew 0 clock 0.00KHz v: height 768 start 0 end 0 total 768 clock 0.00Hz 800x600 (0x3d6) 0.000MHz h: width 800 start 0 end 0 total 800 skew 0 clock 0.00KHz v: height 600 start 0 end 0 total 600 clock 0.00Hz