Proxmox PVE kernel fails to boot

[Geosearchef]

I installed Proxmox on a Debian Bullseye system. The pve kernel fails to boot, ist just gets stuck after "loading rambox". When I boot the old linux kernel installed by Debian, it boots fine and I get the Proxmox interface. The same issue occurs with the installer when it tries to boot the kernel.

Does anybody have an idea what could be going on here? How can I troubleshoot that as I can't even get any logs and the system becomes unresponsive?

 

[Moayad]

hi,

Does anybody have an idea what could be going on here? How can I troubleshoot that as I can't even get any logs and the system becomes unresponsive?

Do you have an GUI running? If so, please try to install pve-headers

apt install pve-headers-$(uname -r)

The pve kernel fails to boot, ist just gets stuck after "loading rambox".

Do you get a black screen or what exactly?

 

[Geosearchef]

hi,


Do you have an GUI running? If so, please try to install pve-headers

apt install pve-headers-$(uname -r)

Do you get a black screen or what exactly?

I booted the system using the normal 5.10 linux (non pve) kernel and installed the correct headers you suggested. The system is still stuck on startup.

The screen shows:

```
Loading Linux 5.15.35-3-pve ...
Loading initial ramdisk ...
_
```
and nothing else. It's completely unresponsive to any keypress, TTY session switch, sys req and caps lock toggle.

 

[_gabriel]

hardware specs ?

 

[Geosearchef]

hardware specs ?

Dell Optiplex 7040, i7-6700k, 32 GB RAM, I'm not sure about the 4TB SSD manufacturer right now that the system uses as boot partition. Unused 18TB HDD with LUKS file system connected (not mounted) but unused.

HDMI Monitor connected to iGPU.
Logitech K120 USB Keyboard.
A USB mouse connected.
Connected to a NATed network with Internet access via ethernet.
Newest BIOS installed, Intel SGX enabled.

 

[Moayad]

Can you please also try to install an older pve-kernel and then boot from it?

 

[Geosearchef]

Can you please also try to install an older pve-kernel and then boot from it?

How do I do that? What kernel version should I use? The 7.1 installer also had this issue, not sure which kernel that one uses though. I don't know how far i can/should go back in time and still have a working system.

 

[Geosearchef]

Can you please also try to install an older pve-kernel and then boot from it?

I just installed `pve-kernel-5.10.6-1-pve`, (as the machine is running debian bullseye on Linux 5.10), that boots completely fine. Can I keep using Proxmox running the 5.10.6-1 kernel? Should I use a newer non LTS one? e.g. 5.11, 5.12, 5.13, 5.14?
Given that Debian also uses a normal 5.10 kernel by default, this issue might also just originate from the Linux 5.15 kernel itself in combination with this system.