Wow! Thanks for that comment, I have a Dell U3818DW with a KVM switch and I didn't know you could control it with DDC commands! So for linux (e.g. fedora):

Wow! Thanks for that comment, I have a Dell U3818DW with a KVM switch and I didn't know you could control it with DDC commands! So for linux (e.g. fedora): dnf install ddcutil ddcutil capabilities -d 1 # show the available commands ddcutil setvcp 60 0x11 # for example switch to HDMI 1 # assign a global shortcut key to the `ddcutil setvcp` command you need And for windows: - download the "Dell Display Manager" software from their support site - assign a shortcut key in the Dell Display Manager: "Input Manager" tab => "Favourite Input Shortcut Key" I used the same shortcut (Ctrl-Alt-ScrollLock) for both linux(kde)/windows