Ubuntu Server NMI Watchdogs (Ubuntu Server 16.04.01 LTS)
Ubuntu Server NMI Watchdogs (Ubuntu Server 16.04.01 LTS)
Hello, I have Ubuntu Server 16.04.01 LTS set up on my machine (https://pcpartpicker.com/list/4KWm7h). The first day went smoothly until I saw the message: "[62066.984382] NMI watchdog: Watchdog detected hard LOCKUP on cpu 8". What should I do? Any advice would be appreciated. Thanks.
An NMI watchdog functions like a timer that initiates a reboot if it runs out of time. The system needs something to interact with in order to reset the count. When the timer reaches its limit, it signals a problem, indicating a potential hang. You can turn it off (see http://askubuntu.com/questions/320689/ca...i-watchdog), but I don’t suggest doing so unless necessary, since a watchdog alert usually points to a deeper issue. For more details, refer to the document at https://gist.githubusercontent.com/wmeal...rrupts.txt. The cause of the hang is often hardware-related, such as a failing GPU, which may stall the kernel. Begin by removing the GPU and testing the system in a headless mode. If everything is configured correctly, you should be able to reach it remotely via serial or network connection.