If you have a thinkpad and use tlp you can set the NMI watchdog to off in /etc/default/tlp
also look at /proc/sys/kernel/nmi_watchdog to see the state RavenLX writes: > I was trying to find a way to fix this warning on my Thinkpad. I have > found out that it is normal for this to happen and can safely be ignored. > > Reference links: > > https://bbs.archlinux.org/viewtopic.php?id=153205 > > https://unix.stackexchange.com/questions/249654/message-at-shutdown-watchdog-did-not-stop > > However, if I set reboot-acpi AND irqpoll (in GRUB_CMDLINE_LINUX in > /etc/default/grub) on a ThinkPad T61 (my computer), I get this error: > > "CPU pipe B FIFO underrun" > > So naturally I don't set reboot-acpi! :) (I was experimenting in trying > to get rid of the watchdog warnings but gave up as it seems harmless and > won't go away anyway). > > Just thought I'd share this in case others run into these things.
