I have tested in Ubuntu 14.04, kernel 3.19. It doesn't install modules and show a text like: "installed versions are newer. Use --force" It can be solved running: cd /var/lib/dkms/btusb-lp1502781/0.1~14.04.3/build sudo make sudo make install sudo reboot And then it works OK. 2015-10-05 18:32 GMT+02:00, Pilot6