The nouveau driver reports an unknown graphics chip. It is an RTX 3060. During the installation with YaST and also later I don’t see a possibility to install driver from nvida automatically. With nouveau there is only a low resulution mode available.
nouveau message:
[1.600812] nouveau 0000:07:00.0: unknown chipset (b76000a1)
https://susepaste.org/55910072
And what do you want?
https://en.opensuse.org/SDB:NVIDIA
https://en.opensuse.org/SDB:NVIDIA_drivers
Leap 15.3 is in beta stage, but https://download.nvidia.com/opensuse/leap/15.3/ .
Well, I expect you want to have feedback for the beta version. I just report the problems I found. Maybe this is already solved or maybe knowing this chipset id is helpful for development.
Hi
Normally it’s done via a bug report 
Hopefully something can be backported for such a beast… openSUSE:Submitting bug reports - openSUSE
The nvidia driver is now installed as described in https://en.opensuse.org/SDB:NVIDIA_drivers. But it was not visible in community repository. Instead I used the https URL. After doing the whole process including importing keys in BIOS it is working.
Thanks for help
Andreas