I've just tested with jammy again and it definitely fails with Nvidia-510. The external monitor plugged into the secondary (Nvidia) GPU doesn't light up for Wayland sessions, while the primary monitor (Intel) works fine.
Although you need to have the monitor plugged in before logging in to even get that far. If you try hotplugging a monitor on the secondary GPU in a Wayland session then you get bug 1964037 instead.
I've just tested with jammy again and it definitely fails with Nvidia-510. The external monitor plugged into the secondary (Nvidia) GPU doesn't light up for Wayland sessions, while the primary monitor (Intel) works fine.
Although you need to have the monitor plugged in before logging in to even get that far. If you try hotplugging a monitor on the secondary GPU in a Wayland session then you get bug 1964037 instead.