xrandr --verbose
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 16384 x 16384
DVI-I-1 disconnected (normal left inverted right x axis y axis)
    Identifier: 0x61
    Timestamp:  4360
    Subpixel:   unknown
    Clones:
    CRTCs:      0 1
    Transform:  1.000000 0.000000 0.000000
                0.000000 1.000000 0.000000
                0.000000 0.000000 1.000000
               filter:
    dithering depth: 6 bpc
        supported: auto, 6 bpc, 8 bpc
    dithering mode: off
        supported: auto, off, static 2x2, dynamic 2x2
    scaling mode: None
        supported: None, Full, Center, Full aspect
    color vibrance: 150
        range: (0, 200)
    vibrant hue: 90
        range: (0, 180)
    underscan vborder: 0
        range: (0, 128)
    underscan hborder: 0
        range: (0, 128)
    underscan: off
        supported: auto, off, on
    subconnector: Unknown
        supported: Unknown, DVI-D, DVI-A
DVI-I-2 connected 1366x768+0+0 (0x65) normal (normal left inverted right x axis y axis) 410mm x 230mm
    Identifier: 0x62
    Timestamp:  4360
    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:
        00ffffffffffff00410ccdc02f2f0000
        011c01036e2917782a0cc5a45750a128
        0d5054bd4b00818081c0010101010101
        010101010101662156aa51001e30468f
        33009ae61000001e000000ff005a5630
        31383031303132303739000000fc0050
        484c2031393356350a202020000000fd
        00384c1e530e000a202020202020005d
    dithering depth: 6 bpc
        supported: auto, 6 bpc, 8 bpc
    dithering mode: off
        supported: auto, off, static 2x2, dynamic 2x2
    scaling mode: None
        supported: None, Full, Center, Full aspect
    color vibrance: 150
        range: (0, 200)
    vibrant hue: 90
        range: (0, 180)
    underscan vborder: 0
        range: (0, 128)
    underscan hborder: 0
        range: (0, 128)
    underscan: off
        supported: auto, off, on
    subconnector: DVI-A
        supported: Unknown, DVI-D, DVI-A
  1366x768 (0x65)   85.5MHz +HSync +VSync *current +preferred
        h: width  1366 start 1436 end 1579 total 1792 skew    0 clock   47.7KHz
        v: height  768 start  771 end  774 total  798           clock   59.8Hz
  1280x1024 (0x66)  135.0MHz +HSync +VSync
        h: width  1280 start 1296 end 1440 total 1688 skew    0 clock   80.0KHz
        v: height 1024 start 1025 end 1028 total 1066           clock   75.0Hz
  1280x1024 (0x67)  108.0MHz +HSync +VSync
        h: width  1280 start 1328 end 1440 total 1688 skew    0 clock   64.0KHz
        v: height 1024 start 1025 end 1028 total 1066           clock   60.0Hz
  1280x720 (0x68)   74.2MHz +HSync +VSync
        h: width  1280 start 1390 end 1430 total 1650 skew    0 clock   45.0KHz
        v: height  720 start  725 end  730 total  750           clock   60.0Hz
  1024x768 (0x69)   78.8MHz +HSync +VSync
        h: width  1024 start 1040 end 1136 total 1312 skew    0 clock   60.1KHz
        v: height  768 start  769 end  772 total  800           clock   75.1Hz
  1024x768 (0x6a)   65.0MHz -HSync -VSync
        h: width  1024 start 1048 end 1184 total 1344 skew    0 clock   48.4KHz
        v: height  768 start  771 end  777 total  806           clock   60.0Hz
  800x600 (0x6b)   49.5MHz +HSync +VSync
        h: width   800 start  816 end  896 total 1056 skew    0 clock   46.9KHz
        v: height  600 start  601 end  604 total  625           clock   75.0Hz
  800x600 (0x6c)   40.0MHz +HSync +VSync
        h: width   800 start  840 end  968 total 1056 skew    0 clock   37.9KHz
        v: height  600 start  601 end  605 total  628           clock   60.3Hz
  640x480 (0x6d)   31.5MHz -HSync -VSync
        h: width   640 start  656 end  720 total  840 skew    0 clock   37.5KHz
        v: height  480 start  481 end  484 total  500           clock   75.0Hz
  640x480 (0x6e)   31.5MHz -HSync -VSync
        h: width   640 start  664 end  704 total  832 skew    0 clock   37.9KHz
        v: height  480 start  489 end  491 total  520           clock   72.8Hz
  640x480 (0x6f)   30.2MHz -HSync -VSync
        h: width   640 start  704 end  768 total  864 skew    0 clock   35.0KHz
        v: height  480 start  483 end  486 total  525           clock   66.7Hz
  640x480 (0x70)   25.2MHz -HSync -VSync
        h: width   640 start  656 end  752 total  800 skew    0 clock   31.5KHz
        v: height  480 start  490 end  492 total  525           clock   60.0Hz
  720x400 (0x71)   28.3MHz -HSync +VSync
        h: width   720 start  738 end  846 total  900 skew    0 clock   31.5KHz
        v: height  400 start  412 end  414 total  449           clock   70.1Hz
HDMI-1 disconnected (normal left inverted right x axis y axis)
    Identifier: 0x63
    Timestamp:  4360
    Subpixel:   unknown
    Clones:
    CRTCs:      0 1
    Transform:  1.000000 0.000000 0.000000
                0.000000 1.000000 0.000000
                0.000000 0.000000 1.000000
               filter:
    dithering depth: 6 bpc
        supported: auto, 6 bpc, 8 bpc
    dithering mode: off
        supported: auto, off, static 2x2, dynamic 2x2
    scaling mode: None
        supported: None, Full, Center, Full aspect
    color vibrance: 150
        range: (0, 200)
    vibrant hue: 90
        range: (0, 180)
    underscan vborder: 0
        range: (0, 128)
    underscan hborder: 0
        range: (0, 128)
    underscan: off
        supported: auto, off, on