xrandr --output VGA1 --auto --output LVDS1 --off (this is working) xrandr --verbose Screen 0: minimum 320 x 200, current 800 x 600, maximum 2048 x 2048 VGA1 connected 800x600+0+0 (0x46) normal (normal left inverted right x axis y axis) 410mm x 257mm Identifier: 0x3b Timestamp: 7776 Subpixel: unknown 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_DATA: 00ffffffffffff004c2d250239314148 211001030e291a878ad7a5a2594a9624 145054bfef809500950f81808140714f 0101010101019a29a0d0518422305098 36009a011100001c000000fd00384b1e 510e000a202020202020000000fc0053 796e634d61737465720a2020000000ff 004853484c3831323030330a202000be 1440x900 (0x3d) 106.5MHz -HSync +VSync +preferred 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 1280x1024 (0x3e) 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 1152x864 (0x3f) 108.0MHz +HSync +VSync h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.5KHz v: height 864 start 865 end 868 total 900 clock 75.0Hz 1024x768 (0x40) 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 (0x41) 75.0MHz -HSync -VSync h: width 1024 start 1048 end 1184 total 1328 skew 0 clock 56.5KHz v: height 768 start 771 end 777 total 806 clock 70.1Hz 1024x768 (0x42) 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 832x624 (0x43) 57.3MHz -HSync -VSync h: width 832 start 864 end 928 total 1152 skew 0 clock 49.7KHz v: height 624 start 625 end 628 total 667 clock 74.6Hz 800x600 (0x44) 50.0MHz +HSync +VSync h: width 800 start 856 end 976 total 1040 skew 0 clock 48.1KHz v: height 600 start 637 end 643 total 666 clock 72.2Hz 800x600 (0x45) 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 (0x46) 40.0MHz +HSync +VSync *current 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 (0x47) 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 (0x48) 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 (0x49) 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 (0x4a) 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 (0x4b) 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 (0x4c) 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 LVDS1 connected 800x600+0+0 (0x46) normal (normal left inverted right x axis y axis) 224mm x 126mm Identifier: 0x3c Timestamp: 7776 Subpixel: horizontal rgb Clones: CRTC: 1 CRTCs: 1 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: EDID_DATA: 00ffffffffffff0030e4480200000000 0013010380160d780a1ee5985a539526 1c505400000001010101010101010101 010101010101121b5660500016303020 3500e07e0000001b0000000000000000 00000000000000000000000000fe004c 4720446973706c61790a2020000000fc 004c503130315748312d544c42340014 BACKLIGHT: 10 (0x0000000a) range: (0,10) Backlight: 10 (0x0000000a) range: (0,10) 1366x768 (0x4d) 69.3MHz +HSync -VSync +preferred h: width 1366 start 1414 end 1446 total 1462 skew 0 clock 47.4KHz v: height 768 start 771 end 776 total 790 clock 60.0Hz 1360x768 (0x4e) 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 800x600 (0x46) 40.0MHz +HSync +VSync *current 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 (0x4f) 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 $ xrandr -q Screen 0: minimum 320 x 200, current 800 x 600, maximum 2048 x 2048 VGA1 connected 800x600+0+0 (normal left inverted right x axis y axis) 410mm x 257mm 1440x900 59.9 + 1280x1024 75.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3* 56.2 640x480 72.8 75.0 66.7 60.0 720x400 70.1 LVDS1 connected 800x600+0+0 (normal left inverted right x axis y axis) 224mm x 126mm 1366x768 60.0 + 1360x768 59.8 800x600 60.3* 640x480 59.9