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 (0x272) normal (normal) 0mm x 0mm
	Identifier: 0x271
	Timestamp:  29914
	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 
  1024x768 (0x272) 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 (0x273) 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