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HDMI Interface

  • Switching Desktop Resolution

    1. Open System Settings and find Display.

    2. Click on Resolution to switch between different resolutions.

  • Switching Resolutions via Command Line

    1. Use the xrandr -q command to check the currently supported resolutions for your screen.
    $ xrandr -q
    Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384
    HDMI-1 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
       3840x2160     30.00*+
       1920x1080     60.00    59.94
       1680x1050     59.88
       1600x900      60.00
       1280x1024     60.02
       1440x900      59.90
       1280x800      59.91
       152x864      75.00
       1280x720      60.00    60.00    59.94
       1024x768      60.00
       800x600       60.32
       720x480       59.94    59.94

    1. Use the xrandr -s 0 command to restore the screen to its original resolution.

    2. Use the xrandr -s command followed by the desired resolution size to set the screen resolution.

    For example:

    xrandr -s 1920x1080

  • Repeatedly plugging and unplugging the HDMI cable

    Repeatedly plugging and unplugging the HDMI cable—does it display normally?