The laptop has worked great for my purposes up until the most recent update. I’d like to continue using it rather than adding disposing of it.
Thank you for doing the research. I did see the ArchWiki link prior and added the nowatchdog to GRUB_CMDLINE_LINUX_DEFAULT= in /etc/default/grub as described here, but that didn’t make a difference. The wiki says “to disable watchdog timers (both software and hardware), append nowatchdog to your boot parameters.” Besides the aforementioned change and running the maxperfwiz script, I am not sure how to add nowatchdog to boot parameters?
The centos link is interesting. While I have used centos some in the past, I prefer manjaro and am hoping to keep it. Are you suggesting to switch to centos? Any additional suggestions to correct the reboot/shutdown failure?
Thanks.