Contabo Proxmox 8.1 VDS, VMs hang on installation process. [XXX.XXXXXX] watchdog: BUG: soft lockup -CPU#X stuck for Xs!

[ksceniev]

Just bought a Contabo VDS and i'm having trouble starting up VMs. I first tried to install Debian 12, it boots up fine to the installation screen but when i click to install i have one of two outputs on the VM console: a black screen or a "watchdog: BUG: soft lockup - CPU#X stuck for XXXs!". Already tried to toggle off the pcid flag as an alternative to kernel downgrade (as seen in a thread here), tried to edit /proc/sys/kernel/watchdog_thresh on the host also (seen in a thread here too) with no effect. Tried to install Ubuntu Server and had simillar outputs.

Qm config output for the VM:

balloon: 0
boot: order=scsi0;ide2;net0
cores: 4
cpu: kvm64
ide2: local:iso/debian-12.4.0-amd64-netinst__2_.iso,media=cdrom,size=628M
memory: 4096
meta: creation-qemu=8.1.2,ctime=1706720827
name: TEST
net0: virtio=BC:24:11:58:7F:6C,bridge=vmbr0
numa: 0
ostype: l26
scsi0: local:100/vm-100-disk-0.qcow2,iothread=1,size=50G
scsihw: virtio-scsi-single
smbios1: uuid=1f122fbb-2962-40b6-b903-017fc15541cd
sockets: 1
vmgenid: 0db36b49-bd8e-46ad-ad71-3b89ee93d0cb

 

[RolandK]

> Contabo VDS

proxmox is not meant to run in virtual environment. you should be able to use it with lxc , but with hypervisor stacked on each other, i guess problems like this should be to expected