Arch Linux

I can't reproduce this on my laptop. Can you attach the output from "pactl list"? I'll try to configure my pulseaudio so that it thinks I have similar hardware as you do.

for me, when the frontal headphone jack is unplug, pulseaudio detect it as plugged, and when connect the headphone jack, pulseaudio detect it as unplugged (no output sound)

headphone plugged: http://wstaw.org/m/2016/02/25/Screenshot_20160225_184920.png
headphone unplugged: http://wstaw.org/m/2016/02/25/Screenshot_20160225_184943.png

└───╼ acpi_listen
jack/headphone HEADPHONE plug
jack/headphone HEADPHONE unplug

'pactl list' plugged: http://sl1pkn07.wtf/paste/view/af66d18d
'pactl list' unplugged: http://sl1pkn07.wtf/paste/view/f7465c26

edit: updating pactl list log

Gustavo, can you confirm that this is something that was caused by the 8.0-1 to 8.0-2 pulseaudio package upgrade? That is, downgrading back to 8.0-1 makes the headphones work again?

yes. downdrade to 8.0-1 solve the problem

Thanks! I don't think it's an issue of pulseaudio detecting headphones as unplugged when you plug them in, the screenshots and the "pactl list" logs don't support that. Rather, you have a surround 5.1 profile selected in both plugged and unplugged cases. When headphones are plugged in, the surround profile becomes unavailable. 8.0-1 will in this situation switch away from the surround profile, but 8.0-2 may not do that. 8.0-2 should behave the same way as PulseAudio 7.1, so compared to 7.1 there shouldn't be any regression. The reason why the behaviour was reverted in 8.0-2 to how 7.1 behaved is that the 8.0-1 behaviour, while good for you, was awful for some other people.

I'll do some testing tomorrow still, I'll try to reproduce the behaviour you're seeing, and also make sure that 7.1 and 8.0-2 behave in the same way. If you can test the last 7.1 Arch package (I believe that was version 7.1-3?) as well to confirm that it behaves the same way as 8.0-2, that would be helpful (I'm not an Arch user myself, but I am to blame for the change that was done between 8.0-1 and 8.0-2).

the screenshot is only for show the "unplugged" word when the headpones jack is connected (pavucontrol)

you are right. when select 5.1 output+analog stereo profile and plug the jack, the profiles is changed to stereo.duplex. and when unplug it, back to 5.1 output+analog profile in pulseaudio 8.0-1

in pulseaudio 8.0-2 keep the same profile (5.1+analog), but one with the word "(unplugged)" when the jack is connected and without "(uplugged)" when the jack is disconnect, but never output sound in the headphones in plug case

I'm not sure if I can test with pulseaudio 7.1-3, due missing shared library (version missmatch) by other programs

greetings

in 7.1-3 works ok, but with wreid pavucontrol behavior

if select 5.1+analog (with the jack disconect) and connect the jack, the profile change to stereo.duplex (and out sound in the headphones), if disconnect the jack, the profile is keep in the stereo.duplex, but the sound in the 5.1 works, if plug again the jack, the profile is keep in stereo.duplex and the headphones works again

I can now reproduce the described behaviour. I'll try to figure out why 8.0-2 behaves differently than 7.1.

I found the problem now. When plugging in headphones the profile switch from surround to stereo doesn't happen, because there are two events that logically happen at the same time, but pulseaudio processes them sequentially, and the processing order is "wrong" in 8.0-2. First headphones become available, but pulseaudio doesn't switch to them, because the lineout (i.e. the currently active port) appears to be still available. Then the lineout becomes unavailable, but the 7.1 logic doesn't switch profiles when a port becomes unavailable.

This works in 7.1, because the processing order is different: first the lineout becomes unavailable, nothing happens at this point, and then headphones become available, and since the currently active port is now unavailable, pulseaudio switches to the headphones.

8.0-2 can be made match the 7.1 behaviour by reverting this commit: https://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/?id=91313e60a81e96ce976f24c522656c57b4ab94ca