For whatever reason, having an X server installed causes my headless server to completely hang (no response to any pings, attempts to ssh in, input on exsiting ssh connections, anything. waiting 10+ minutes doesn't un-hang the server), with the only solution being to force a reboot via my hosters web interface. EDIT: confirmed X server probably is actually not causing it. Removing xserver-xorg didn't help.
Looking around online, I saw some complaints about linux kernel 5.3 with Xorg/X server causing hangs.
Because I need a server that doesn't crash every 30-45 min with absolutely no trace in logs of why, I chose to remove xorg and all of the related compenents.
After fighting with VNC and no X server for about 30min, the server hung again. What could be the problem?
Syslog from last crash:
It's a server running on an AMD Ryzen 5 3600, with 64GB DDR4 RAM and two 512GB NVMe SSDs in RAID 0. Running Ubuntu 19.10
Edit: Interestingly enough removing all packages related to X11, GNOME, and XFCE seems to have gotten rid of the problem. Service called NetworkManager was requesting a suspend, according to the logs at the link. Now the question is why?
71 Answer
It was XFCE's built in power management. It was suspending the server after 30 minutes, rendering it inaccessible
Switched to LXDE and no further problems
Also need to forcibly disable hibernate and sleep services:
sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target(Source: )
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