Checkstop

Diagnosing a Checkstop

There are a few ways to obtain logs of a checkstop.

nvram

From either the OS or Skiroot, run this as root/sudo after the machine has rebooted following the checkstop (but before rebooting again):

nvram --unzip lnx,oops-log

If you're lucky, it will return a log of the most recent checkstop. If you instead get nvram: ERROR: can't decompress text: inflate() returned -3, then the log in NVRAM is corrupted for some reason, and you'll need to try a different approach.

opal-prd

Before the checkstop occurs, run the following from the OS (this is for Debian; most other distros package it as well; see your distro's documentation for details):

sudo apt install opal-prd

Once installed, if you're lucky, any subsequent checkstops should show up in journalctl output.