Upgraded from Ubuntu 14.04 to 15.04 on my lenovo T410 a couple of weeks ago and I have been having some problems with my network connection ever since.
Everything worked fine with 14.04, but now I am forced to run 'sudo service network-manager restart' almost every time my computer wakes up. It claims to be connected and it seems to have an IP, but i cant even access my routers GUI. Any permanent solutions out there or anyone with similar problems? It doesnt bother me to run the network-manager restart, except it sucks to do it every time im going to use my computer.