Same problem here. Happens both with 6.1.66-1 and 6.6.5-1 kernels. Have to force power off the machine to get it to stop. What appears to be hanging the system is two stop jobs, one for Network Manager and the other for WPA supplicant. On both processes, when the timer runs to the 1 min 31 sec limit, the timer resets for 3 min 1 sec. and resets again when this limit is reached.
Have 5.15.142-1, 6.1.66-1 and 6.6.5-1 LTS kernels installed. Before this update machine ran without the shutdown problem on 6.1 LTS kernel . After the update I installed the LTS, 6.6.5-1. both the 6.1 and 6.6 LTS kernels have this shutdown fault. I will use the 5.15 LTS kernel until this is resolved.
Kernel 6.6.5-1: if I switch on wifi (RTL8192EE PCIe Wireless Network Adapter) in NetworkManager and then switch off, the computer becomes unresponsive. No network (neither wireless nor wired), mouse moves but buttons do nothing. With prior kernel (6.6.3) had no problems. I have to use REISUB to restart, if I repeat wifi on/off again, the computer also freezes. Then switched to kernel 5.15.142 and everything works fine again so it must be something 6.6 kernel related, I will stay on 5.15 and wait for next 6.6 update.
error: tensorflow-opt-cuda: signature from "Sven-Hendrik Haase <sh@lutzhaase.com>" is invalid
:: File /var/cache/pacman/pkg/tensorflow-opt-cuda-2.15.0-4-x86_64.pkg.tar.zst is corrupted (invalid or corrupted package (PGP signature)).
Do you want to delete it? [Y/n] ^C
Interrupt signal received