Common Display configurations for all Platforms ¶
Setting the HDMI or the DP Screen Resolution ¶
The screen resolution can be modified using the xrandr utility or RandR protocol .
To change the default HDMI/DP screen resolution ¶
-
Export the
DISPLAY
variable:$ export DISPLAY=:0
-
Obtain the applicable resolutions list:
$ xrandr
The resulting output shows a list of the connected HDMI/DP settings.
-
Switch the resolution to the display resolution that you want:
$ xrandr --output HDMI-0 --mode
$ xrandr --output DP-0 --mode Where
640x480
.The highest rate supported for the specified mode is automatically chosen.
-
Select a refresh rate:
$ xrandr --output HDMI-0 --mode
--rate Where
60
.Use
xrandr
to display all supported refresh rates for a mode.
Mirroring or Extending Displays ¶
When multiple displays are connected, you can choose the relative position of each monitor (HDMI or DP).
To choose the relative position of each monitor ¶
-
Execute the following command to mirror the DP monitor on the HDMI monitor:
$ xrandr --output DP-0 --same-as HDMI-0
-
Execute the following command to extend the display environment by placing the DP monitor to the left of the HDMI monitor:
$ xrandr --output DP-0 --left-of HDMI-0
-
Execute the following command to place the DP monitor to the right of the HDMI monitor:
$ xrandr --output DP-0 --right-of HDMI-0