While trying to pass my 1050TI graphics card into an Ubuntu 20.04 VM on a new Proxmox server, I kept running into the following error...
I searched forums and blog posts for days, playing with almost every step of the Proxmox GPU pass through guide until I finally found this post.
The fix was simple. The original guides included this line to be added to the grub config at
The fix was to change the last few configuration flags for the video from
video=vesafb:off video=efifb:off. For whatever reason, grub doesn't like those values provided in csv format.
All credit for this fix goes out to Mopen on the Proxmox official forums. This blog post is just to hopefully increase visibility as it took me days of searching to find it.