After migration Proxmox 8 to 9 with Kernel 6.14 PC freezes

[bkry]

Hello,
The new provided log does not show the reason for the freeze:

Nov 14 17:33:38 pve pvedaemon[1612]: update new package list: /var/lib/pve-manager/pkgupdates
Nov 14 17:33:41 pve pvedaemon[1196]: update new package list: /var/lib/pve-manager/pkgupdates
Nov 14 17:33:45 pve pvedaemon[1196]: <root@pam> end task UPID:pve:0000064C:00002911:691759E1:aptupdate::root@pam: OK

Before when the NUT was enabled there was a clear message:

Nov 14 15:30:13 pve systemd-logind[858]: The system will power off now!
Nov 14 15:30:13 pve systemd-logind[858]: System is powering down.

but seems now it silently freeze.
did you check if the log show anything more after the message above at Nov 14 17:33:45, maybe provide:

journalctl --since "2025-11-14 17:00" --until "2025-11-14 18:30" > /tmp/$(hostname)-syslog.txt

I still think disabling the NUT is a good step for troubleshooting this issue.
hmm did you also test with kernel 6.14 while NUT disabled? not sure if it will be much of helpful but If you can, please do so and provide the log as shown above include ~1h before and after booting the working kernel.

 

[biotim]

I generally on 6.2 because everything above the timeout when running a snapshot.

 

[Lalsacien]

Hi bkry,

Here is the log you asked.
I will try the same with kernel 6.14

Many thanks

 

[Lalsacien]

Me again,

Here is the boot sequence with kernel 6.14 without NUT. Finally, I have unistalled NUT on the Proxmox server.

And now 9.1 is coming out

Hope the log file help. Many Thanks

 

[Lalsacien]

I generally on 6.2 because everything above the timeout when running a snapshot.

Hello,
Sorry, but not understand

 

[bkry]

Could you please try to update the Bios.
The log contain many errors as bellow:

$ grep -E "Linux version|ACPI BIOS Error" pve-syslog_6.17.txt
Nov 14 17:30:48 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20230628/psargs-332)
Nov 14 17:30:48 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20230628/psargs-332)
Nov 14 17:31:56 pve kernel: Linux version 6.17.2-1-pve (build@proxmox) (gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44) #1 SMP PREEMPT_DYNAMIC PMX 6.17.2-1 (2025-10-21T11:55Z) ()
Nov 14 17:31:56 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20250404/psargs-332)
Nov 14 17:31:56 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20250404/psargs-332)
Nov 14 17:31:56 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20250404/psargs-332)
...
Nov 14 17:31:57 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20250404/psargs-332)
Nov 14 17:31:57 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20250404/psargs-332)
Nov 14 17:44:27 pve kernel: Linux version 6.8.12-14-pve (build@proxmox) (gcc (Debian 12.2.0-14+deb12u1) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40) #1 SMP PREEMPT_DYNAMIC PMX 6.8.12-14 (2025-08-26T22:25Z) ()
Nov 14 17:44:27 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20230628/psargs-332)
Nov 14 17:44:27 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20230628/psargs-332)
...
Nov 14 17:44:28 pve kernel: ACPI BIOS Error (bug): Could not resolve symbol [\_SB.UBTC.RUCC], AE_NOT_FOUND (20230628/psargs-332)
$ grep "ACPI BIOS Error" pve-syslog_6.17.txt -wc
42

Although the the Bios errors appears for both kernels, it might be that the newer kernel freeze due to it.

 

[Lalsacien]

Hi bkry,

Thanks for your answer. It’s probably the reason, but don't think this 2023's chinese nuc will receive any bios update.
I will try and send this log to the support.

Perhaps, I will have to find a new nuc and install Proxmox from scratch

Many thanks for your time and answers.
Read you soon
Jacky