After waiting a while whatever is slamming the machine's memory stops, and I'm able to run commands.
Running the update again fails immediately: minfrin@syslog01:~$ sudo apt-get update; sudo apt-get upgrade; sudo apt-get autoremove; sudo shutdown -r now sudo: unknown uid 4000: who are you? sudo: unknown uid 4000: who are you? sudo: unknown uid 4000: who are you? sudo: unknown uid 4000: who are you? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1701751 Title: During routine apt-get update/upgrade: sudo: unknown uid 4000: who are you? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1701751/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs