apparently it's a kernel bug in 14.04's kernel as I've read before. Upgrading to 16.04 fixes it.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-system-monitor in Ubuntu. https://bugs.launchpad.net/bugs/1310583 Title: System monitor not showing network traffic Status in gnome-system-monitor package in Ubuntu: Confirmed Bug description: When I run the System Monitor the network history is zero and it keeps on zero... while i'm downloading large files. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: gnome-system-monitor 3.8.2.1-2ubuntu1 ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9 Uname: Linux 3.13.0-24-generic x86_64 NonfreeKernelModules: wl nvidia ApportVersion: 2.14.1-0ubuntu3 Architecture: amd64 CurrentDesktop: Unity Date: Mon Apr 21 13:38:51 2014 ExecutablePath: /usr/bin/gnome-system-monitor InstallationDate: Installed on 2014-04-20 (0 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) ProcEnviron: LANGUAGE=es PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=es_ES.UTF-8 SHELL=/bin/bash SourcePackage: gnome-system-monitor UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-system-monitor/+bug/1310583/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
