Created attachment 260265 [details] alsa-info.sh output Running a Debian Linux with pulseaudio 10.0: * the internal speaker emits no sound despite signal shown in the pulseaudio mixer (independent of headphones plugged in or not -- never). * headphones work as expected. There is a workaround: Pulseaudio turns off speakers when headphones are plugged in with a rule in /usr/share/pulseaudio/alsa-mixer/paths/analog-output-speaker.conf Changing in this file: > [Element Headphone] > -switch = off > -volume = off > +switch = mute > +volume = zero results in working internal speakers. I reported the bug and workaround to the pulseaudio list and was told that this is an alsa problem I should report upstream. https://lists.freedesktop.org/archives/pulseaudio-discuss/2017-October/028915.html
To clarify, the bug is simply that muting the Headphone element mutes also the speakers. If the driver can be changed so that the Headphone element only mutes the headphone output, that would be ideal, but if this is a hardware limitation, the mixer element should be named something else than "Headphone".