Same problem here. Without init_on_alloc=0 suspend to RAM is not working (system freezes).
With init_on_alloc=0 suspend to RAM is working, but waking up sometimes is not working.
inxi -G
Graphics:
Device-1: NVIDIA GT218 [GeForce 210] driver: nouveau v: kernel
Display: x11 server: X.Org 1.20.11 driver: loaded: modesetting
unloaded: fbdev,vesa resolution: 1: 1920x1080~60Hz 2: 1920x1080~60Hz
OpenGL: renderer: NVA8 v: 3.3 Mesa 20.3.5
uname -a
Linux living 5.10.0-9-amd64 #1 SMP Debian 5.10.70-1 (2021-09-30) x86_64 GNU/Linux