I rebooted my machine to find the simple steps:
- loading evdi kernel module before X has been started
- start X server (GNOME session at my current setup)
- start "DisplayLinkManager" (currently using root privileges)
Now xrandr shows the provider (listproviders).
Code:
$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x49 cap: 0xb, Source Output, Sink Output, Sink Offload crtcs: 4 outputs: 6 associated providers: 0 name:Intel
Provider 1: id: 0x11c cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 0 name:modesetting
After that is used
Code:
xrandr --setprovideroutputsource 1 0
and activated the output "DVI-1-0" after all (in the run before it has been named "DVI-1-1").
All fine.