Server unresponsive with dmesg output

hippymastiff

New Member
Oct 31, 2025
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Hello, I started my adventure with Proxmox in September, but I have not been able to figure out the following problem.

In September, I installed Proxmox 9.0 via ISO. The installation went smoothly, but after a week, the first problems arose with the server becoming unresponsive and the webUI unreachable.
So, in October, I decided to install version 8.4, again from ISO, but the problem does not seem to have been resolved. I updated from 8.4 to 9.0, but the server continues with his behaviour.
After the interruption, the server does not shut down and by looking at the screen connected to the server, I noticed that the output of dmesg (I believe) is displayed (see image below), without the possibility of interacting with the server in any way.

20251103_133945.jpg

In the last session, I had the following machines running:
- LXC with AdGuardHome
- LXC with NginxProxyManager
- VM with Proxmox Backup Server
- VM with pFsense

Before the interruption, I was performing the backup job via the Proxmox Backup Server VM. On other sessions, however, the Proxmox Backup Server VM was not even turned on.

I have already attempted to check the RAM using memtest86+ without finding any errors (PASS).

What do you think I can do to find the root cause of the problem?

Below are the details of my server:

Code:
root@pve:~# pveversion -v
proxmox-ve: 9.0.0 (running kernel: 6.14.11-4-pve)
pve-manager: 9.0.11 (running version: 9.0.11/3bf5476b8a4699e2)
proxmox-kernel-helper: 9.0.4
proxmox-kernel-6.14.11-4-pve-signed: 6.14.11-4
proxmox-kernel-6.14: 6.14.11-4
proxmox-kernel-6.8: 6.8.12-16
proxmox-kernel-6.8.12-16-pve-signed: 6.8.12-16
proxmox-kernel-6.8.12-15-pve-signed: 6.8.12-15
proxmox-kernel-6.8.12-9-pve-signed: 6.8.12-9
ceph-fuse: 19.2.3-pve1
corosync: 3.1.9-pve2
criu: 4.1.1-1
frr-pythontools: 10.3.1-1+pve4
ifupdown2: 3.3.0-1+pmx10
ksm-control-daemon: 1.5-1
libjs-extjs: 7.0.0-5
libproxmox-acme-perl: 1.7.0
libproxmox-backup-qemu0: 2.0.1
libproxmox-rs-perl: 0.4.1
libpve-access-control: 9.0.3
libpve-apiclient-perl: 3.4.0
libpve-cluster-api-perl: 9.0.6
libpve-cluster-perl: 9.0.6
libpve-common-perl: 9.0.11
libpve-guest-common-perl: 6.0.2
libpve-http-server-perl: 6.0.5
libpve-network-perl: 1.1.8
libpve-rs-perl: 0.10.10
libpve-storage-perl: 9.0.13
libspice-server1: 0.15.2-1+b1
lvm2: 2.03.31-2+pmx1
lxc-pve: 6.0.5-1
lxcfs: 6.0.4-pve1
novnc-pve: 1.6.0-3
proxmox-backup-client: 4.0.16-1
proxmox-backup-file-restore: 4.0.16-1
proxmox-backup-restore-image: 1.0.0
proxmox-firewall: 1.2.0
proxmox-kernel-helper: 9.0.4
proxmox-mail-forward: 1.0.2
proxmox-mini-journalreader: 1.6
proxmox-offline-mirror-helper: 0.7.2
proxmox-widget-toolkit: 5.0.6
pve-cluster: 9.0.6
pve-container: 6.0.13
pve-docs: 9.0.8
pve-edk2-firmware: 4.2025.02-4
pve-esxi-import-tools: 1.0.1
pve-firewall: 6.0.3
pve-firmware: 3.17-2
pve-ha-manager: 5.0.5
pve-i18n: 3.6.1
pve-qemu-kvm: 10.0.2-4
pve-xtermjs: 5.5.0-2
qemu-server: 9.0.23
smartmontools: 7.4-pve1
spiceterm: 3.4.1
swtpm: 0.8.0+pve2
vncterm: 1.9.1
zfsutils-linux: 2.3.4-pve1

Output of journalctl -b -1 -o short-precise: https://paaster.io/69091b1b07bde492dd2d474e#rq1qrfFbjqAxzp4U2-Qv__Z1rC6uzdApJgpJBUhsBQo

Here's my hardware setup:
  • ASUS TUF Gaming B760M-PLUS and the
  • Intel Core i9 12900K
  • Crucial Pro RAM DDR5 Kit 64GB
  • WD_BLACK SN850X 2TB SSD
  • Cooler Master MWE 750 Gold V2