You have been subscribed to a public bug: I upgraded to 18.10 and afterwards the fan was running constantly at high speed. I looked it up and found a post where the user had a similar problem, and the reply was to run top, so I did and systemd-u+ was using 99-100% CPU, causing the overheating. I turned it off using the second answer here: https://askubuntu.com/questions/907246/how-to- disable-systemd-resolved-in-ubuntu and it has gone away.
I edited etc/systemd/resolved.conf as the guy said, and just put my hub ip in as the DNS and the internet works fine. uname --all says: Linux 4.18.0-10-generic #11-Ubuntu SMP Thu Oct 11 15:13:55 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux ** Affects: systemd (Ubuntu) Importance: Undecided Status: New ** Tags: bot-comment systemd ubuntu18.10 -- systemd-u+ running CPU at 99-100% https://bugs.launchpad.net/bugs/1818352 You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp