Sometimes, typically in the first minute after booting I get the following error on my Ubuntu 18.04 LTS setup:
Kernel panic - not syncing: Timeout: Not all CPUs entered broadcast exception handler
[....] Shutting down cpus with NMI
[....] Kernel Offset: 0xe4000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff
[....] Rebooting in 30 seconds..
After that the machine just freezes and never reboots. The PC also has a dual boot setup with windows 10 which never crashes.
Any idea what might be causing this?
sudo cat /var/log/boot.log
. This might be too long to post here, so use Ubuntu pastebin if you have to. – Raffa Apr 03 '20 at 18:51journalctl --list-boots
the output will list previous boots with a number on the left before each one. Please find a date and time where this issue happened during that boot. Then note the number on the left ( it might look like 0,1,2...etc or with a dash like 0,-1,-2...etc ) use the nubmer as it is with/without a dash in this command directly after-b
like sojournalctl -b1
or sojournalctl -b-2
then add the output to Ubuntu pastebin and add the link in your question – Raffa Apr 09 '20 at 13:30