Ubuntu 22.04.3 on X1 Extreme won't turn off

[Feddy]

I was trying to solve some problem with sound and BT on my X1E. After reinstalling the drivers, I seem to get them back to work, but now the system doesn't turn off after I click the Power Off option. It does close the apps and something else, and then freezes at the interface with red Lenovo and Ubuntu logos on black background. The only way I can turn if off completely is to press the Reset button on the bottom of the laptop which disconnects the internal battery. How can I diagnose/fix it?

[newcfd]

take a look at syslog first

[MAFoElffen]

The syslog stops writing at a certain point. If I am trying to debug a shutdown problem, I use journalctl, usually with something similar to:

journalctl -b 2 -g 'systemd' --no-pager | grep -A 200 -Ei 'shutdow'