have you tried running "sudo shutdown -h now" in terminal to see if that makes shut down faster?I played with Sonoma 14.0 and OCLP 1.0.0 on an ancient spare MacPro 3.1 with RX580 and SSD. Amazingly, it installed and can boot OK with a few well-known Wi-Fi and BT problems (which are not a worry b/c Ethernet is working fine). The only annoyance is that shutdown reboots a minute or so later. I've tried the sudo pmset -a hibernate 0 terminal command recommended as the temporary fix but it seems not to work. Are there any other possible fixes besides a hard power button off shutdown?
I don't know if macOS has a reboot command like Linux, and I don't remember the restart flag for the shutdown command, so at least that command will work to turn off the machine.
Edit #2, yes, it has /usr/bin/reboot, so also try that with the sudo command.
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