CmdID / Commands
Diagnose Direct Rendering Manager and Kernel Mode Setting. tldr-pages
On Linux
Opens CmdID with your command. It is read in your browser and sent nowhere.
List connectors and their available modes
modetest -c
List connectors and their available modes for a specific driver
modetest -M mgag200 -c
Set the resolution of a connector
sudo modetest -M mgag200 -s connector_id:1600x1200