Can you also give the latest 3.16 upstream stable kernel a try, to see if the fix already made it's way through stable updates:
http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.16.6-utopic/
Can you also give the latest 3.16 upstream stable kernel a try, to see if the fix already made it's way through stable updates:
http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.16.6- utopic/