Created attachment 841985 [details]
output of journalctl

Using Kernel 5.4.10 and current TW as of the date of this report.


Today I was working normally in Xorg and suddenly my laptop freezed: no
keyboard input, mouse cursor moving but clicks inoperant, ssh'ing from another
PC impossible. Interestingly, I had audio playing and it still continue to play
normally. Fans of the laptop triggered full speed, indicating high CPU usage.

I rebooted the laptop with ALT+SysRq+b and looked at the journal which contains
a lot of  "watchdog: BUG: soft lockup - CPU#1 stuck for 22s!"  entries with
stack trace that seems to refer to usb.
I have attached the full journal log, look at the end for the "BUG: soft
lockup" entries. At that point, the laptop had an uptime of about 3 days with a
few suspend in-between.

As far as USB is concerned, I have a Thunderbolt 3 dock connected and audio was
playing through it (via USB audio) when it happened. Also had an Android device
connected to the laptop directly. There's the Logitech unifying receiver
connected to the laptop and a keyboard connected to the dock.
I can include the output of hwinfo if necessary

This freeze is rare in the grand scheme of things but it also happened once 2
weeks ago with a previous 5.4.x kernel. First I blamed it to the NVIDIA driver
and did not investigate more, but now I'm not so sure given that the stack
trace refer to USB.