Proxmox on AMD CPU does not boot with latest kernel 5.13.19-2

I updated Proxmox on a HP MicroServer Gen10 (AMD Opteron) and the system didn’t boot, using a previous kernel works.

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Someone solved with this


Any news?


Just as a side note: I have at Hetzner two AMD based Proxmox, both are running the 5.13 Kernel - and both boot without issues. I installed both Proxmox in December 2021…

It could be that only “certain” AMD CPU series have issues…

Both Proxmox in addition are fully ZFS equipped, bootable ZFS Mirror…

My 2 cents