Comment 56 for bug 1729389

I had previously worked around this problem using the solution in comment #17. Now I just upgraded to linux-firmware 1.157.15, as I saw it in my Ubuntu Xenial updates and it referenced fixing this bug. I therefore removed the workaround in comment #17 and rebooted. The problem returned immediately (I tried multiple reboots and reconnects). Bluetooth still disconnects after a period of time if wifi is also connected. I had to reinstate the workaround in comment #17 again to have a working mouse, even with the new linux-firmware update. I am using Ubuntu 16.04 kernel 4.13.0-31.