关机卡在
“starting version 250.4-2-arch
/dev/nvme。。。。。。。。。。blocks
watchdog:watchdog0:watchdog did not stop!
sd-umoun[3197]:failed to unmount /oldroot: device or resource busy
sd-umoun[3198]:failed to unmount /oldroot/sys: device or resource busy
shutdown[1]:failed to finalize file systems,ignoring."
网上搜了下，可能是nvidia专用显卡驱动的事，添加shutdon到hooks可以关机。
在/etc/mkinitcpio.conf文件中，找到下面的hooks，添加shutdown到括号内容的末尾，然后mkinitcpio -p linux.