Dear Maintainer, the last realtime-kernel I could boot into a wayland session (gdm) was 7.2.9. I don't know, if 7.2.10 was the first that failed. At least, 7.2.11 was the first one that I experienced that behaviour. The funny thing about all this: non-rt-kernel all work fine. If I choose a rt-kernel since 7.2.11 at grub, terminal font stays big, it boots until gdm-session should be brought up but it stays at the terminal, not-starting wayland - and here is where I am, now, writing this bugreport.