Soft Lockup on Ubuntu 22.04 LTS at boot


I just built a Ubuntu 22.04LTS desktop system with an NVIDIA Corporation GK208 [GeForce GT 730].

The system also has an oldish integrated Intel UHD GPU, which is not used.

The system was going fine on the nouveau drivers until I installed the NVIDIA drivers:

sudo ubuntu-drivers autoinstall && sudo reboot

It installed:

NVIDIA UNIX x86_64 Kernel Module 470.161.03 Wed Oct 19 00:10:36 UTC 2022

At first, I thought the system would not boot. It just sat there, beeping occasionally, but it did eventually boot after about 5 minutes.

At first, I thought I had a problem with secure booting, so I disabled
secure boot. That made no difference. Examination of the logs showed that the system was booting normally, right up to the time that gdm was being started. There were soft lockups:

watchdog: BUG: soft lockup - CPU#5 stuck for 27s! [gpu-manager:1018]

I tried to attach as much diagnostic information as I think exposes the issue, but I’m only allowed one attachment!

I have blacklisted nouveau since the data collection. It didn’t help.

nvidia-bug-report.log (250.1 KB)