root@x-sgb4:~# xrandr --verbose
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 32767 x 32767
DP1 connected 1920x1080+0+0 (0x47) normal (normal left inverted right x axis y axis) 509mm x 286mm
        Identifier: 0x42
        Timestamp:  36357
        Subpixel:   unknown
        Gamma:      1.0:1.0:1.0
        Brightness: 1.0
        Clones:
        CRTC:       0
        CRTCs:      0 1
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter:
        EDID:
                00ffffffffffff0010ac60a04c433234
                04150104a5331d783eee95a3544c9926
                0f5054a54b00714f8180d1c001010101
                010101010101023a801871382d40582c
                4500fd1e1100001e000000ff00564e59
                4e4d31314d3432434c0a000000fc0044
                454c4c205532333131480a20000000fd
                00384c1e5311000a202020202020002e
        Broadcast RGB: Automatic
                supported: Automatic, Full, Limited 16:235
        audio: auto
                supported: force-dvi, off, auto, on
  1920x1080 (0x47) 148.500MHz +HSync +VSync *current +preferred
        h: width  1920 start 2008 end 2052 total 2200 skew    0 clock  67.50KHz
        v: height 1080 start 1084 end 1089 total 1125           clock  60.00Hz
  1280x1024 (0xac) 135.000MHz +HSync +VSync
        h: width  1280 start 1296 end 1440 total 1688 skew    0 clock  79.98KHz
        v: height 1024 start 1025 end 1028 total 1066           clock  75.02Hz
  1280x1024 (0xad) 108.000MHz +HSync +VSync
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock  63.98KHz
        v: height 1024 start 1025 end 1028 total 1066           clock  60.02Hz
  1152x864 (0xae) 108.000MHz +HSync +VSync
        h: width  1152 start 1216 end 1344 total 1600 skew    0 clock  67.50KHz
        v: height  864 start  865 end  868 total  900           clock  75.00Hz
  1024x768 (0xaf) 78.800MHz +HSync +VSync
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock  60.06KHz
        v: height  768 start  769 end  772 total  800           clock  75.08Hz
  1024x768 (0xb0) 65.000MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock  48.36KHz
        v: height  768 start  771 end  777 total  806           clock  60.00Hz
  800x600 (0xb1) 49.500MHz +HSync +VSync
        h: width   800 start  816 end  896 total 1056 skew    0 clock  46.88KHz
        v: height  600 start  601 end  604 total  625           clock  75.00Hz
  800x600 (0xb2) 40.000MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock  37.88KHz
        v: height  600 start  601 end  605 total  628           clock  60.32Hz
  640x480 (0xb3) 31.500MHz -HSync -VSync
        h: width   640 start  656 end  720 total  840 skew    0 clock  37.50KHz
        v: height  480 start  481 end  484 total  500           clock  75.00Hz
  640x480 (0xb4) 25.200MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock  31.50KHz
        v: height  480 start  490 end  492 total  525           clock  60.00Hz
  720x400 (0xb5) 28.320MHz -HSync +VSync
        h: width   720 start  738 end  846 total  900 skew    0 clock  31.47KHz
        v: height  400 start  412 end  414 total  449           clock  70.08Hz
HDMI1 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x43
        Timestamp:  36357
        Subpixel:   unknown
        Clones:     VGA1
        CRTCs:      0 1
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter:
        aspect ratio: Automatic
                supported: Automatic, 4:3, 16:9
        Broadcast RGB: Automatic
                supported: Automatic, Full, Limited 16:235
        audio: auto
                supported: force-dvi, off, auto, on
VGA1 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x44
        Timestamp:  36357
        Subpixel:   unknown
        Clones:     HDMI1
        CRTCs:      0 1
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter:
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x45
        Timestamp:  36357
        Subpixel:   no subpixels
        Clones:
        CRTCs:      2
        Transform:  1.000000 0.000000 0.000000
                    0.000000 1.000000 0.000000
                    0.000000 0.000000 1.000000
                   filter: