For some reason I cannot start a Wayland GNOME session with gdm. It's not
offered. I'm using hybrid graphics (Intel/NVIDIA). Our developer contacts at
nvidia told me it would be supported. I found in 

/usr/lib/udev/rules.d/61-gdm.rules

# If this is a hybrid graphics laptop with vendor nvidia driver, disable
wayland
LABEL="gdm_hybrid_nvidia_laptop_check"
TEST!="/run/udev/gdm-machine-is-laptop",
GOTO="gdm_hybrid_nvidia_laptop_check_end"
TEST!="/run/udev/gdm-machine-has-hybrid-graphics",
GOTO="gdm_hybrid_nvidia_laptop_check_end"
TEST!="/run/udev/gdm-machine-has-vendor-nvidia-driver",
GOTO="gdm_hybrid_nvidia_laptop_check_end"
GOTO="gdm_disable_wayland"
LABEL="gdm_hybrid_nvidia_laptop_check_end"

I commented out the goto to gdm_disable_wayland

--- 61-gdm.rules.orig   2024-12-04 14:28:00.037203367 +0100
+++ 61-gdm.rules        2024-12-04 14:37:29.146187234 +0100
@@ -87,7 +87,7 @@
 TEST!="/run/udev/gdm-machine-is-laptop",
GOTO="gdm_hybrid_nvidia_laptop_check_end"
 TEST!="/run/udev/gdm-machine-has-hybrid-graphics",
GOTO="gdm_hybrid_nvidia_laptop_check_end"
 TEST!="/run/udev/gdm-machine-has-vendor-nvidia-driver",
GOTO="gdm_hybrid_nvidia_laptop_check_end"
-GOTO="gdm_disable_wayland"
+#GOTO="gdm_disable_wayland"
 LABEL="gdm_hybrid_nvidia_laptop_check_end"

 # Disable wayland in situation where we're in a guest with a virtual gpu and
host passthrough gpu

but this didn't help either.