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I have a small domestic server (with Ubuntu 18.04.4 LTS), it works well but once a month more or less, it goes off, it's not serious but I wanted to try to understand what the cause was. I have opened /var/log/syslog and the last lines are:

Feb 11 17:50:34 raspberry NetworkManager[581]: <info>  [1581439834.7583] manager: sleep: sleep requested (sleeping: no  enabled: yes)
Feb 11 17:50:34 raspberry NetworkManager[581]: <info>  [1581439834.7740] manager: NetworkManager state is now ASLEEP
Feb 11 17:50:34 raspberry whoopsie[723]: [17:50:34] offline
Feb 11 17:50:34 raspberry systemd[1]: Reached target Sleep.
Feb 11 17:50:34 raspberry systemd[1]: Starting Hybrid Suspend+Hibernate...
Feb 11 17:50:34 raspberry kernel: [597152.871367] PM: Image not found (code -22)
Feb 11 17:50:34 raspberry systemd-sleep[30140]: Suspending system...
Feb 11 17:50:34 raspberry kernel: [597152.880705] PM: hibernation entry
<0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00><0x00>

It says raspberry but it's not, I just named it raspberry.

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  • To start with, which version of Linux have you installed (Ubuntu server, Ubuntu desktop, Kubuntu, Lubuntu, Xubuntu, Ubuntu MATE, et al.) , and which release number? Are you using virtualization, and if so, which package? Please click edit and add that vital information to your question. Please do not use Add Comment – K7AAY Feb 12 at 21:15

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