Solved: using the kernel option "intremap=off" makes the wifi work correctly.
I also posted the solution here: http://h30499.www3.hp.com/t5/Networking /wifi-and-brightness-issues-with-EliteBook-755-on- Ubuntu-14-04/m-p/6568286/highlight/false#M9589 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1343151 Title: "No scan results" with BCM43228 on 14.04 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/broadcom-sta/+bug/1343151/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs