This is a new Ubuntu 22.04.5 Pro installation.
Initially up until December 28, 2024 there was no issue a complete powering off. Clicked
on the pop up screen to upgrade from 22.04 to 24.04 and this is when the issue began. I
have upgraded the bios from 1.75 to 1.80, followed and completed a number of suggestions
but the laptop will not turn off. Interesting enough I am testing a dual-boot x470 with
the same linux distro plus windows 11. This issue does not happen on this laptop.
I
think you should press ESC on the exit splash screen and show what
happens (a recording I think. Also, does it turn off when left in that
half powered off state for 30 minutes?