xrandr --verbose

ubuntu@ubuntu:~$ xrandr --verbose
Screen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192
LVDS1 connected 1600x900+0+0 (0x45) normal (normal left inverted right x axis y axis) 382mm x 215mm
        Identifier: 0x41
        Timestamp:  2261477
        Subpixel:   horizontal rgb
        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:
                00ffffffffffff000daf111700000000
                05130103802716780a06359e56529829
                14505400000001010101010101010101
                0101010101012f2640a060841a303020
                35007ed710000018000000fe004e3137
                334f362d4c30320a2020000000fe0043
                4d4f0a202020202020202020000000fe
                004e3137334f362d4c30320a2020002f
        BACKLIGHT: 1 (0x00000001)       range:  (0,7)
        Backlight: 1 (0x00000001)       range:  (0,7)
        scaling mode:   Full aspect
                supported: None         Full         Center       Full aspect
  1600x900 (0x45)   97.8MHz -HSync -VSync *current +preferred
        h: width  1600 start 1648 end 1680 total 1760 skew    0 clock   55.5KHz
        v: height  900 start  903 end  908 total  926           clock   60.0Hz
  1440x900 (0x46)  106.5MHz -HSync +VSync
        h: width  1440 start 1520 end 1672 total 1904 skew    0 clock   55.9KHz
        v: height  900 start  903 end  909 total  934           clock   59.9Hz
  1360x768 (0x47)   84.8MHz -HSync +VSync
        h: width  1360 start 1432 end 1568 total 1776 skew    0 clock   47.7KHz
        v: height  768 start  771 end  781 total  798           clock   59.8Hz
  1360x768 (0x48)   72.0MHz +HSync -VSync
        h: width  1360 start 1408 end 1440 total 1520 skew    0 clock   47.4KHz
        v: height  768 start  771 end  781 total  790           clock   60.0Hz
  1152x864 (0x49)   81.6MHz -HSync +VSync
        h: width  1152 start 1216 end 1336 total 1520 skew    0 clock   53.7KHz
        v: height  864 start  865 end  868 total  895           clock   60.0Hz
  1024x768 (0x4a)   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 (0x4b)   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
  800x600 (0x4c)   36.0MHz +HSync +VSync
        h: width   800 start  824 end  896 total 1024 skew    0 clock   35.2KHz
        v: height  600 start  601 end  603 total  625           clock   56.2Hz
  640x480 (0x4d)   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   59.9Hz
VGA1 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x42
        Timestamp:  2261477
        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:
HDMI1 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x43
        Timestamp:  2261477
        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:
        force_audio: 0 (0x00000000)     range:  (-1,1)
DP1 disconnected (normal left inverted right x axis y axis)
        Identifier: 0x44
        Timestamp:  2261477
        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:
        force_audio: 0 (0x00000000)     range:  (-1,1)
ubuntu@ubuntu:~/vgl$