Erratic wireless network

[Guest]

I recently updated (not a clean install) my laptop from Kubuntu 14.04 to 15.04. Previously I had to change a config file to get wifi working on a computer after a Kubuntu installation but I don't know if it was this laptop or some other one in the past. At any rate I don't remember what I had to do. This does not seem to be router related because other devices on network still work. When it quits, network manager shows no networks even though when the wifi works there are a number of nearby networks. Re-booting seems to be the only thing that works. Is there a good solution to this problem. My specs are:



Kubuntu 15.04
HP Pavilion i5

Kernel: Linux 3.19.0-25-generic
rtl8188ee wireless adapter.

Thanks for any help