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Someone on support said my machine might be going into 'sleep' mode because of the GUI installed on it.
He suggested I run the following command:
systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target

Honestly, I think this fixed it. I've had a gmod server running now for ...

Hello,

I have recently installed pterodactyl. SSH and the server were working fine through the preliminary steps, but around the time I started installing wings, https://pterodactyl.io/wings/1.0/installing.html, specifically just before you configure a node, my server started incurring a problem ...

1.)
https://forums.nfoservers.com/viewtopic.php?f=47&t=4078
Can Ubuntu support that "realtime" thing described here? It says it works on Gentoo but I'm using Ubuntu.

2.)
https://forums.nfoservers.com/viewtopic.php?t=3706
This part talks about when we need to update our own gameservers, OS software ...