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Thanks for this link, I tried it, but it doesn't seem directly related, not to these devices anyway. root@mordor:~# /mnt/pve/iso/snippets/check_intx.sh 0000:81:00.0 INTx disable supported and enabled on 0000:81:00.0 root@mordor:~# /mnt/pve/iso/snippets/check_intx.sh 0000:82:00.0 INTx disable...

Thanks for your response. I tried switching to q35 6.2 and kernel 5.19 but getting same behavior. I haven't tried a different cpu model, did you mean one in particular other than host in the VM config? This is my host syslog, and attached its dmesg as well. There seem to be vfio related error...

I rebuilt my VM using UEFI bios, but am getting same resulting behavior. I did reduce a bit its memory resource so it boots up a little quicker. See output `dmesg` with and without pcie passthrough attached to this response. This is my new VM config: agent: 1 balloon: 0 bios: ovmf boot...

I did a test setting up unraid with a similarly spec'd VM on the same server, passing through the same storage devices, and it booted without trouble. Memory still ramps up on boot as soon as I passthrough any pcie device, but apart from that I was able to boot and detect drives with all cores...

Thanks for your reply, unfortunately it didn't seem to make a difference here

Hi there, I am setting up proxmox on a new beefy system (dual epyc 7742, 512gb of memory, and 4 nvme drives). Upon setting up my first VM, I went all in by assigning 128 cores in 2 sockets with numa enabled, with a good chunk of memory. I was able to boot it up and install my OS as normal...