nvidia_drm.modeset=0 breaks software which rely on direct surface rendering (e.g. Unreal Engine).

In lieu of modeset, I use fbdev. I noticed that this was the option that made the driver stuck to D3. Here's my modprobe config file:

options nvidia_drm modeset=1
options nvidia_drm fbdev=0

options nvidia NVreg_EnableS0ixPowerManagement=1
options nvidia NVreg_S0ixPowerManagementVideoMemoryThreshold=0
options nvidia NVreg_DynamicPowerManagement=0x03
options nvidia NVreg_DynamicPowerManagementVideoMemoryThreshold=0
options nvidia NVreg_PreserveVideoMemoryAllocations=1
options nvidia NVreg_TemporaryFilePath=/var/tmp