No network usage info presented, always 0 bytes/s.

Here is a screenshot presenting what it happening. I'm loading webpages and watching a livestream on Twitch, and nothing is showing up on the Monitor. I have restarted the PC multiple times since I noticed that, but I think it started happening after the upgrade to Ubuntu 20.04 (GNOME 3.36).

Thanks, it could be the same issue than https://gitlab.gnome.org/GNOME/gnome-system-monitor/-/issues/142

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.

NB: I'm using Linux Mint 20, which is based on Ubuntu 20.04 and uses the gnome-system-monitor package from Ubuntu 20.04.

This issue is a known one in GNOME System monitor, and is fixed with 3.36.1 release of GNOME System Monitor. Hence Ubuntu and Mint should push the the 3.36.1 release to their repositories to fix this issue.

I uploaded 3.36.1-0ubuntu0.20.04.1 to the focal queue, it's now in the hands of the SRU team.

Thank you! :)

Hello Matheus, or anyone else affected,

Accepted gnome-system-monitor into focal-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/gnome-system-monitor/3.36.1-0ubuntu0.20.04.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, what testing has been performed on the package and change the tag from verification-needed-focal to verification-done-focal. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed-focal. In either case, without details of your testing we will not be able to proceed.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance for helping!

N.B. The updated package will be released to -updates after the bug(s) fixed by this package have been verified and the package has been in -proposed for a minimum of 7 days.

Okay, works for me.

Package version:

3.36.1-0ubuntu0.20.04.1 (amd64)

Details of testing:

I changed the update frequency to 0.5 and 0.25 seconds and the network graph and stats continued to work, unlike before when the graph stopped displaying meaningful information.

This bug was fixed in the package gnome-system-monitor - 3.36.1-0ubuntu0.20.04.1

---------------
gnome-system-monitor (3.36.1-0ubuntu0.20.04.1) focal; urgency=medium

  * New upstream release (LP: #1881197)
  * debian/control{,.in}: require meson >= 0.50

 -- Olivier Tilloy <email address hidden> Mon, 07 Dec 2020 15:48:25 +0100

The verification of the Stable Release Update for gnome-system-monitor has completed successfully and the package is now being released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.