If anyone needs a good workaround, this worked perfectly for me on a mba 2013 running 14.04: http://carlocapocasa.com/crushing-the-kworker-uprising-or-how-to-fix-your-linux-lenovo-ideapad-y560p/
If anyone needs a good workaround, this worked perfectly for me on a mba 2013 running 14.04: http:// carlocapocasa. com/crushing- the-kworker- uprising- or-how- to-fix- your-linux- lenovo- ideapad- y560p/