Do you happen to have a desktop installation? If so, it does appear that GNOME now defaults to auto-suspending the system after ~20 minutes of inactivity: https://gitlab.gnome.org/GNOME/gnome-control-center/issues/22
** Bug watch added: gitlab.gnome.org/GNOME/gnome-control-center/issues #22 https://gitlab.gnome.org/GNOME/gnome-control-center/issues/22 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1862559 Title: ubuntu 19.10: unresponsive/freezes on ThunderX2 if system is idle for ~22min To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1862559/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
