Can't Boot Installer, No Video Out - Threadripper 3960x + TRX40D8-2N2T

G

glasshammer

Active Member
Nov 7, 2020
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I've pretty successfully setup Proxmox on multiple machines so I've troubleshooted Proxmox before, but I've never had this much trouble with just booting the ISO. This is a Debian specific kernel level issue, I know, because Ubuntu 24.04 Server live disk gets through, but Debian 12 and Proxmox 8.4 give up on video out. (I've tried Debian 13 and Proxmox 9.1, but I end up with the same issues as reported by proxy and was not able to solve it with the suggestions.) I've attempted with the BMC VGA, NVS 310, 980Ti, and an ancient ATI card. After grub, regardless of GUI or Terminal, debug or not, my display goes black. These are the grub options I've tried in various combination:

Code: 
nomodeset video=vesafb:off,efifb:off modprobe.blacklist=ast (to ignore the BMC VGA) acpi=off OR pci=nomsi

I have enabled IOMMU, SR-IOV, and Above 4G Decoding per my usual setup and disabled them in varying combination just in case. I can't even get the serial console out to print, but that might be more related to my motherboard's Serial-Over-Lan which is flaky.

I really need some help, lads.
 
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UdoB said:
That's interesting as PVE uses an Ubuntu Kernel ;-)

Possible workaround as a last resort: install Debian Trixie first, then install PVE - https://pve.proxmox.com/wiki/Install_Proxmox_VE_on_Debian_13_Trixie - you would lose "OS on ZFS" though...
Click to expand...
Very interesting. Still whatever differentiates the Ubuntu 24 kernel from the PVE kernel seems to make a difference unfortunately. I would love to move up to Debian Trixie or Proxmox 9.1, but I can't even get past "Loading Ramdisk" with any level of verbosity. The discussion I linked addressed that problem, but none of those very detailed solutions have worked for my board at all. But good suggestion.

I've considered trying to boot Proxmox 7 and upgrading from that point, but that still doesn't help me get any video out if and when I need it.
 
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