On my Ubuntu 13.10 desktop, the /proc/net/dev file contains only zeroes for all interfaces other than lo, despite having a working connection. This seems to lead most bandwidth monitoring tools to believe that there is no network traffic at all, including gnome-system-monitor.
Here's a screenshot of EtherApe, System Monitor and /proc/net/dev all together:
As you can see, EtherApe is recording about 1.16 Mbps in HTTPS traffic alone, while System Monitor says 0 bytes/s. Any ideas as to why this would happen, and how to solve this?
1 Answer
Just fixed the same problem on mint linux(debian), may work for you too.
/proc/net/dev was not populated (eth0 had 0'es in stats for everything), as result everything that gets info from it like ifcongif: misses data and some apps like browsers and Adobe Flash was working a bit laggy.
I think problem was on misconfiguration of kernel compiled when i build(install) my system, so i simply used packet manager ('mintupdate', but ubuntu somehow can work with kernel updates too, i belive) to update kernel from 3.13.0-37 to 3.16.0-33.
And after reboot all problems are gone, youtube now can play hd videos without switching quality like crazy (144p->720p->360p->144p->720p lol)
