Any gpu related command freeze system completely when nvidia is powered off

[nicole21-1]

Hello everyone,

I bought recently an Asus Rog Strix Scar 3 - model G531GV and wanted to perform a side by side installation of Parrot OS together with the already installed windows 10 OS.
So i did install Parrot OS and reached the point where i had to configure bumblebeed so i could use the power management support.
After a lot of struggle and numerous hard resets i managed to configure it up to the point that optirun/primusrun commands work as intented, use gpu , and when they are done bbswitch kicks in and completely powers off my gpu.

cat /proc/acpi/bbswitch -> 0000:01:00.0 OFF

And now the funny part begins, i realized that while gpu is powered off by bbswitch, any kind of command that is related to gpu completely freezes my computer (ex. nvidia-smi, lspci -k, etc.)

System specifics:

Laptop model : Asus Rog Strix Scar III - G531GV
Installed OS : Parrot 4.9 64-bit (full updated)
Kernel : Linux 5.5.0-1parrot1-amd64 x86_64
Nvidia Gpu : RTX-2060 6GB
Nvidia-Drivers : Latest - Proprietary 440.82

I would be more than happy to issue any requested commands to tackle down this issue.

Thank you all in advance.