Question: How to set a persistant resolution? about cage HOT 4 OPEN

Ideally Cage would support a mode where it completely delegates output configuration to kanshi, instead of making decisions on its own.

from cage.

So there are no startup -options or -scripts that can be used now - and kanshi is the way to go for setting a resolution. Thanks for the info/clarification.

from cage.

You can use wlr-randr instead of kanshi if you don't need hotplug. However cage will still perform its own modeset before wlr-randr has the chance to change it to something else.

from cage.

What I ended up doing was calling wlr-randr before starting my (Java) app. Here is the ExecStart line from my systemd service file:

ExecStart=/usr/bin/cage -- sh -c 'wlr-randr --output HDMI-A-2 --mode 1920x1080@60 && java -jar /home/cage/PiKiosk-linux-arm64-1.0.0.jar'

More on this here: https://github.com/SergeySn/PiKiosk/?tab=readme-ov-file#run-the-sample-compose-app-with-cage -> 8. Optional: Force cage to use a specific resolution

from cage.