xrandr: Failed to get size of gamma for output default Screen 0: minimum 640 x 480, current 1024 x 768, maximum 1024 x 768 default connected 1024x768+0+0 (0x51a) normal (normal) 0mm x 0mm Identifier: 0x519 Timestamp: 1064544 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 1024x768 (0x51a) 47.972MHz *current h: width 1024 start 0 end 0 total 1024 skew 0 clock 46.85KHz v: height 768 start 0 end 0 total 768 clock 61.00Hz 800x600 (0x51b) 29.280MHz h: width 800 start 0 end 0 total 800 skew 0 clock 36.60KHz v: height 600 start 0 end 0 total 600 clock 61.00Hz 640x480 (0x51c) 18.432MHz h: width 640 start 0 end 0 total 640 skew 0 clock 28.80KHz v: height 480 start 0 end 0 total 480 clock 60.00Hz