There are times when there is no direct Internet connection, in cases where it would be possible to access the access point from a mobile connection for your PC. Unfortunately, the sad experience I know how Windows 10 can quietly "eat" the traffic even after specifying the connection settings, paid and following the other tips.
The question itself - "eats" is also in pure Ubuntu? It would be interesting to hear the advice.
What do You want? Big Brother wants to see you - so Windows and knocking, where prescribed. Linux by itself eats just for the traffic updates - installed software, programs, and some programs update need inside it disable - FF for example, toad, Flash Player...
chelsea13 answered on July 2nd 19 at 17:52
If you fear for the traffic - it is better to not put Ubuntu (in which unity is trying so hard to please user that loads the ads on its search in the applications menu), and Xubuntu, for example. Well, of course, if you put, say, a weather widget - it extends to the Internet for information. Included messenger - is similar. Launch the browser - it could theoretically be their own interests, especially in add-ons.
And the system Internet will not come back, why would she? Startup update check disable all.
gerald.Vandervort4 answered on July 2nd 19 at 17:54
Ubuntu eats nothing. MB check for updates, but the pump is not.
Win too is not eating, if properly set up brandmauer - policy white list + disable updates. Important for win7 and below. What kind of obscurantism in win10 with telemetry - XS, but I saw a lot of resources like this case to eradicate (configs).