There was also a smaller kernel/firmware problem with regard to the 5070 Ti that could be skipped by pressing enter. Now after beeing able to update to latest bazzite release, the problem is gone.
Summary
xe 0000:00:02.0: [drm] Tileo: GT1: ucs3 fused off
xe 0000:00:02.0: [drm] Tiled: GT1: ucs4 fused off
xe 0000:00:02.0: [drm] Tile: GT1: ucs5 fused off
xe 0000:00:02.0: [drm] Tiled: GT1: ucsó fused off
xe 0000:00:02.0: [drm] Tile: GT1: ucs? fused off
xe 0000:00:02.0: [drm] Tilee: GT1: vecsi fused off
xe 0000:00:02.0: [drm] Tile: GT1: vecs2 fused off xe
0000:00:02.0: [drm] Tileo: GT1: vecs3 fused off
nvidia-nulink: Nvlink Core is being initialized, major device number 506
nvidia 0000:01:00.0: Unable to change power state fron D3cold to De, device inaccessible
NVRM: The NVIDIA GPU 0000:01:00.0
NVRM: (PCI ID: 10de:2f58) installed in this system has
NVRM: fallen off the bus and is not responding to commands.
nvidia 0000:01:00.0: probe with driver nvidia failed with error -1
NVRM: The NVIDIA probe routine failed for 1 device(s).
NVRM: None of the NVIDIA devices were initialized.
nvidia-nvlink: Unregistered Nvlink Core, major device number 506
xe 0000:00:02.0: [drm] Registered 4 planes with dra panic
[drm] Initialized xe 1.1.0 for 0000:00:02.0 on minor 0
ACPI: video: Video Device [GFX0] (multi-head: yes rom: no post: no)
input: Video Bus as/devices/LNXSYSTM:00/LNXSYBUS:00/PNPOAOB:00/LNXVIDEO:01/input/input20
xe 0000:00:02.0: [drm] Allocated fbdeu into stolen
fbcon: xedrmfb (fb0) is primary device
typec port1: bound usb3-port6 (ops connector_ops)
typec port1: bound usb1-port1 (ops connector_ops)
typec port1: bound usb2-port2 (ops connector_ops)
typec port1: bound usb2-port4 (ops commector_ops)
Console: switching to colour frame buffer device 360x112
xe 0000:00:02.0: [drm] fb0: xedrmfb frame buffer device