Good time of day! Already asked, but apparently wrong. A couple of months ago I installed Edubuntu 12.10, I am satisfied with everything, but I recently tried to connect a projector and found that the laptop screen has only one resolution in this distribution: 1280 * 800. And the projector has no such permission. Can you please tell me how to change the screen resolution of a laptop?

    1 answer 1

    When a projector is connected to the console, you do xrandr. You get something like

    Screen 0: minimum 320 x 200, current 1280 x 1024, maximum 4096 x 4096VGA1 connected 1280x1024 + 0 + 0 (normal left inverted right x axis y axis) 0mm x 0mm 1360x768 59.8
    1024x768 60.0
    800x600 60.3 56.2
    848x480 60.0
    640x480 59.9 59.9
    1280x1024_60.00 59.9 *

    Only you will have VGA2 or VGA-2 or something else with the only resolution of 1280 * 800. This is the name of your output to the projector. Possible interface names:

    • LVDS1 - laptop screen;
    • VGA1 - screen connected via VGA;
    • DVI1 - screen connected via DVI;

    Remember it.

    1. Create a new resolution. For example 1024x768 50 Hz

    cvt 1024 768 50

    At the output we get a type string

    1024x768 49.98 Hz (CVT 0.79M3) hsync: 39.63 kHz; pclk: 52.00 MHzModeline "1024x768_50.00" 52.00 1024 1072 1168 1312 768 771 775 793 -hsync + vsync

    Then everything is simple

    xrandr --newmode "1024x768_50.00" 52.00 1024 1072 1168 1312 768 771 775 793 -hsync +vsync xrandr --addmode VGA2 1024x768_50.00 xrandr --output VGA2 --mode