https://wiki.debian.org/SoundConfiguration

On 27/07/16 11:48 Barry Samuels <bjsamuels@...org.uk> wrote

I'm running Debian Testing, up to date as of today, and for a few months now have had no audio. I used to have sound both on the desktop and in the browser then I lost sound in the browser and finally in the desktop.

I suspect that an upgrade somewhere along the way has caused this but I don't know what and I haven't been able to cure it.

[ALSA works on known hardware if used directly]

So that means I have exhausted my knowledge of Linux and audio and I still don't have any sound. Any suggestions would be gratefully received.

Hi Barry,

Are you running PulseAudio as part of your desktop installation? I had a similar failure (HDMI ports not showing up in audio output options) that turned out to be the wrong audio device detection module in use.

Specifically, in /etc/pulse/default.pa the following was commented out:

### Automatically load driver modules depending on the hardware available #.ifexists module-udev-detect.so #load-module module-udev-detect #.else ### Use the static hardware detection module (for systems that lack udev support) load-module module-detect #.endif

so pulse was using module-detect which is obsolete and broken. Uncommenting the udev module sorted me out:

### Automatically load driver modules depending on the hardware available .ifexists module-udev-detect.so load-module module-udev-detect .else ### Use the static hardware detection module (for systems that lack udev support) load-module module-detect .endif

Cheers, Phil.