Alternative solution that worked for me on Linux 3.14.4, too: CONFIG_HP_WIRELESS=y
Related bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1303420
Alternative solution that worked for me on Linux 3.14.4, too: CONFIG_ HP_WIRELESS= y
Related bug: https:/ /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1303420