Comment 26 for bug 1467190

I have an HP 8740w that has the same problem on Xenial LTS (16.04.3) with the HWE (4.10) kernel, although I have also tested it on the 4.4 generic kernel with the same results.

The sound configuration shows only analog audio possibilities (5, IIRC), whereas on my older HP (stolen) and my broken ASUS (when it was working) both showed 7 or more options, including several digital options, many of which worked just fine through the HDMI TV at the other end.

I have used four different DP-HDMI adapters, 3 which were non-active and the newest one, which is an active adapter from SIIG - no digital sound at all.

What this does is it makes it impossible to get, e.g., movie sound on the HDMI TV set, which means I am stuck with the notebook speakers - they're nice, but it's just not the same, or a plug-in set, which should never be necessary when the hardware supports the right kind of sound.

If I put the Windows hard drive the system cam with back into the notebook and run from there, the sound is just fine. That was strictly for test purposes - I never use Windows if I can avoid it, which is better than 99% of the time.

I would really appreciate a fix. I can attach whatever information you need on request.

Thanks.