Kernel 6.5.13-1 won't boot - black screen

[Bubbagump210]

I just updated a Dell T340 from PVE7 to 8. I went through all the pve7to8 --full checks and simply followed the documented procedure. I also installed systemd-boot per the docs as I am indeed running UEFI on ZFS. I can still boot into 5.15.143-1. pve7to8 --full still shows as clean with the exception of complaining about the kernel version. I am using systemd to boot as opposed to grub.

proxmox-boot-tool status
Re-executing '/usr/sbin/proxmox-boot-tool' in new private mount namespace..
System currently booted with uefi
6AD3-4B0C is configured with: uefi (versions: 5.15.143-1-pve, 6.5.13-1-pve)
7FAB-AB64 is configured with: uefi (versions: 5.15.143-1-pve, 6.5.13-1-pve)

This shows that the kernel is available to boot.

What debugging can be done to see where the hang up is? For what it is worth, this machine has an Nvidia P400 on driver 550.54.14 which compiled the DKMS fine when 6.5.13-1 was installing. I confirmed this by running 'apt reinstall proxmox-kernel-6.5.13-1-pve-signed' and indeed it did compile the DKMS with no errors. PCI passthrough is being used thus IOMMU is enabled.

Any thoughts? Is there a way to debug this and see where it is failing as syslog and kern shows nothing.

EDIT: Also, when I edit the kernel parameters in systemd-boot by pressing 'e' and removing 'quiet' I get "EFI stub: Loaded initrd from command line option" and no other output.

 

[Bubbagump210]

For what it's worth I installed pve-kernel-6.2 and kernel 6.2.16-20 works perfectly well.

 

[emunt6]

Nvidia P400 on driver 550.54.14 which compiled the DKMS fine when 6.5.13-1 was installing.

Need to blacklist the "builtin" kernel drivers for NVIDIA GPU:

/etc/modprobe.d/nvidia.conf
blacklist nvidiafb
blacklist nouveau

$> update-initramfs -c -d -u
$> update-grub

REBOOT

 

[Bubbagump210]

Those modules are already blacklisted (and have been for ages) along with ‘options nouveau modeset=0’. I would expect 6.2 or 5.15 to have failed ages ago had these modules been loaded along with the Nvidia driver.

Also I’m using systemd-boot so the grub commands wouldn’t apply.

 

[Bubbagump210]

Any future Googlers, I have no idea the issue but updated kernel 6.5.13-3 works fine.