Were would I find the documentation on creating a custom screen resolution menu on boot? I'm assuming I would use CUSTOM_CONFIG but I can't seem to locate the documentation on its use. I tried the following:
but then I just get a black screen on boot. I want the user to be able to choose from the above resolutions and then auto connect using freerdp. I have everything else working perfectly, just need a custom resolutions menu to pop up on boot.