Hi, I've no idea why but when I'm using the bluetooth speaker SoundBlaster roar sr20a if I have Boom2 turned on after a while the system logs me out. It's enough to turn off Boom 2 to solve the problem. I do not know what more information I can give. Other than in that situation everything works fine. I have a macbook pro retina late 2012, now I have OS X El Capitan but it was the same with previous OS X. Any idea? Thanks!