xrandr: Failed to get size of gamma for output default
Screen 0: minimum 4480 x 1600, current 4480 x 1600, maximum 4480 x 1600
default connected 4480x1600+0+0 (0x281) normal (normal) 0mm x 0mm
	Identifier: 0x280
	Timestamp:  3248733
	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: 
  4480x1600 (0x281)  358.4MHz *current
        h: width  4480 start    0 end    0 total 4480 skew    0 clock   80.0KHz
        v: height 1600 start    0 end    0 total 1600           clock   50.0Hz