I have the same issue, in my case at least it's definitely the issue you found Sebastien.
As pointed out at https://answers.launchpad.net/ubuntu/+source/gnome- system-monitor/+question/693912, Ubuntu is not a rolling release, but it would improve UX, and as noted at https://wiki.ubuntu.com/StableReleaseUpdates updates with simple changes that don't affect infrastructure may be candidates. Of course, it's not my decision to make, and if there's no interest I will instead report to the Linux Mint people, but I figure trying upstream first is better. ** Changed in: gnome-system-monitor (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1881197 Title: No network usage info presented, always 0 bytes/s. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/1881197/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs