Comment # 4 on bug 1173777 from anon

First I tried running the script from the nvidia thread as is:

setpci -s 01:00.0 0x488.l=0x2000000:0x2000000
rmmod nvidia-drm nvidia-modeset nvidia
echo 1 > /sys/bus/pci/devices/0000:01:00.0/remove
echo 1 > /sys/bus/pci/devices/0000:00:01.0/rescan
modprobe nvidia-drm
xinit -- -retro

it didn't work. then I ran

lspci -t

and found my gpu's address was at 02:00 so I edited the script above and ran it
from the command line (ctrl alt f1):

sudo setpci -s 02:00.0 0x488.l=0x2000000:0x2000000
sudo rmmod nvidia-drm nvidia-modeset nvidia
sudo sh -c 'echo 1 > /sys/bus/pci/devices/0000:02:00.0/remove'
sudo sh -c 'echo 1 > /sys/bus/pci/devices/0000:00:02.0/rescan'
sudo modprobe nvidia-drm

it gave me this error (and the command lines seems stuck in a loop, no way to
stop it, even ctrl c):

rmod: ERROR: module nvidia_drm is in use
rmod: ERROR: module nvidia_modeset is in use by: nvidia_drm
rmod: ERROR: module nvidia is in use by: nvidia_uvm nvidia_modset

I tried to run the script before login (system settings/startup and
shutdown/auto start) and it does nothing.