What I'm experiencing is similar to what's reported in
https://bugzilla.opensuse.org/show_bug.cgi?id=928020.
The wireless connection stalls seemingly randomly (after ~10-30 min), i.e. no
connection to any web page, irc etc. is then possible despite the connection
being shown as being active in the NetworkManager (plasma 5). Only
disconnecting and reconnecting resolves this problem.

I've tried this with the Leap default kernel 4.1.15 and with 4.1.18. 
N.B.: It did not seem to happen with 4.4.3, though I'm not sure about this
because I uninstalled this rather quickly again after some kernel crash was
being reported in dmesg (some null pointer dereferencing message).


I'm not sure what kind of information is required/appropriate to debug this,
I'm attaching hwinfo output, just in case.