Issues with installing Nvidia Legacy 390xx driver

[Neon91]

Hi all, newbie here;

I'm using an old dell R720 which has an old Nvidia Grid K1 gpu card installed and cant seem to have any success getting the nvidia drivers installed for, I have added the non-free and non-free-firmware source to

/etc/apt/sources.list

# Debian Sid
deb http://deb.debian.org/debian/ sid main contrib non-free non-free-firmware

as described in this guide https://wiki.debian.org/NvidiaGraphicsDrivers

however when I enter
# apt install nvidia-legacy-390xx-driver firmware-misc-nonfree

I get this out

W: (pve-apt-hook) !! WARNING !!
W: (pve-apt-hook) You are attempting to remove the meta-package 'proxmox-ve'!
W: (pve-apt-hook)
W: (pve-apt-hook) If you really want to permanently remove 'proxmox-ve' from your system, run the following command
W: (pve-apt-hook) touch '/please-remove-proxmox-ve'
W: (pve-apt-hook) run apt purge proxmox-ve to remove the meta-package
W: (pve-apt-hook) and repeat your apt invocation.
W: (pve-apt-hook)
W: (pve-apt-hook) If you are unsure why 'proxmox-ve' would be removed, please verify
W: (pve-apt-hook) - your APT repository settings
W: (pve-apt-hook) - that you are using 'apt full-upgrade' to upgrade your system
E: Sub-process /usr/share/proxmox-ve/pve-apt-hook returned an error code (1)
E: Failure running script /usr/share/proxmox-ve/pve-apt-hook

Can anyone aid? Will attach full output as a text file
Thanks

 

[leesteken]

# apt install nvidia-legacy-390xx-driver firmware-misc-nonfree

AFAIK, Debian firmware packages and Proxmox are mutually exclusive.

 

[Neon91]

AFAIK, Debian firmware packages and Proxmox are mutually exclusive.

i figured this might have something to do with it though this being the case I'm not entirely sure how to go about installing the driver for this device