mine is a HP pavillion Dv6-6015tx laptop. I dual boot windows 7 and ubuntu 13.04. One glaring problem i have found with ubuntu 13.04 is that it gives me a battery backup of less than an hour. Although, on Windows i get a minimum of 100 minutes backup. Someone please help me out with this problem. I love ubuntu otherwise. Thank You.
Well ,I guess it has to be the switchable graphics thingy.
This should help:
You should be fine after this.