Just a quick one today. I started playing with Proxmox on a Beelink U59 Pro, there were some VM instabilities and it turns out I wasn’t alone.
Uh oh! I thought I would be stuck turning this into a Win Mini PC, however, it turns out there are some CPU issues with the Intel 5xxx processors, here.
I had a look through the forums and it looks like it is an issue with Kernel 5.15. Proxmox have issued a 5.19 kernel which appears to resolve the issue, this has since be superseded with a 6.1 Kernel.
Forum post here.
It’s easy to install though
apt install pve-kernel-6.1
Update – 27/02/2023
Turns out there is slightly more to the issue than a kernel patch.
You need to patch the microcode for the processor.
Add the following to /etc/default/grub (GRUB_CMDLINE_LINUX_DEFAULT) intel_idle.max_cstate=1 processor.max_cstate=1
Update Grub (update-grub)
edit /etc/apt/sources.list add non-free to
deb http://ftp.debian.org/debian bullseye main contrib non-free
deb http://ftp.debian.org/debian bullseye-updates main contrib non-free
deb http://security.debian.org bullseye-security main contrib non-free
apt install intel-microcode