DELL U4320Q ddccontrol in Linux switch input

Device i2c number

$ sudo ddccontrol -p | grep /dev/

 - Device: dev:/dev/i2c-8

this is the device i2c number.

switch input source

$ sudo ddccontrol -r 0x60 -w 4883 dev:/dev/i2c-8

-r 0x60: this is the input source switch.

4883: target port.

DP1  15 or 4879

DP2  16 or 4883

HDMI1  17 or 4881

HDMI2  18 or 4882

USB-C 4891

read current value

$ sudo ddccontrol -r 0x60 dev:dev/i2c-8

you can get the current value this way, if you have a different monitor model.

Reference

https://github.com/ddccontrol/ddccontrol-db/blob/master/doc/how-to-add-a-monitor.md

https://askubuntu.com/questions/860761/ubuntu-command-line-to-change-input-source-on-a-display-monitor