My new M1 MacBook Pro airplay didn't work .
I try to use airplay to mirror my screen to AppleTV.
When I choose my appletv at airplay , my mbp will fall back to login screen.
meanwhile, I cannot use Sidecar with my iPad Air 2 too.
At System Preference - Sidecar , didn't showup my iPad , even I plug with cable .
MacBook Pro 13″, macOS 11.0