@Paul Gear: you could try 3.18-rc6 from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.18-rc6-vivid/, it works fine with utopic.
@Paul Gear: you could try 3.18-rc6 from http:// kernel. ubuntu. com/~kernel- ppa/mainline/ v3.18-rc6- vivid/, it works fine with utopic.