I have the same issue on nixos with NVIDIA Driver Version: 575.51.02 and Kernel 6.14.8 on KDE Plasma 6.3.5 with Wayland and a 5080.
I can wake my Samsung 4K TV (which I use as monitor, HDMI to HDMI) only by turning off the TV and switching to TTY. Then I can switch on and CTRL+Fn+1 back to desktop.
Driver 575.57.08 seems to have fixed issues for me. Thank you nvidia
Version 575.57.08 did not fix the problem on my computer when using the PIP/PBP function on my Samsung Odyssey G9 monitor.
Here is my system information:
Fedora Linux 42 (Workstation Edition) 64-bit
Kernel 6.14.9-300.fc42.x86_64
Wayland
GNOME 48
GeForce RTX 4070
NVIDIA DRIVER 575.57.08
With Xorg the problem does not occur and everything works perfectly.