Yep, I’ve got a stack of 5-10 year old optiplexes (optiplexi?) running proxmox.
I’m a professor of Religious Studies with a research focus on medieval Islam, particularly with regard to Sufism, the occult sciences, and manuscript culture. I also interested in all things linux, occult, scifi, UFO, and anarchist.
Yep, I’ve got a stack of 5-10 year old optiplexes (optiplexi?) running proxmox.
Did it currently have windows installed? If so, have you turned off secure boot and fastboot?
If you’ve done all that already, then maybe try adding nomodeset to the kernel parameters in grub. You can find instructions by searching how to set kernel parameters. It’s fairly easy, but kind of a pain to explain.