Shutdown doesn't work

[stampf]

I installed the extension (Ubuntu 24.04.2 LTS). My system is in french should that matter.

I could make the hibernate feature work perfectly fine.

But Shutdown does absolutely nothing (before installing the extension, it worked normally).

I don't know where to look for error messages ? dmesg doesn't show anything.

I just tried to deactivate the extension to fall back to the standard shutdown, but it doesn't work either (anymore).