xrandr: Failed to get size of gamma for output default Screen 0: minimum 640 x 480, current 640 x 480, maximum 640 x 480 default connected 640x480+0+0 (0x51f) normal (normal) 0mm x 0mm Identifier: 0x51e Timestamp: 38988 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: non-desktop: 0 supported: 0, 1 640x480 (0x51f) 0.000MHz *current h: width 640 start 0 end 0 total 640 skew 0 clock 0.00KHz v: height 480 start 0 end 0 total 480 clock 0.00Hz