There is no entry in 'Play sound through' list when plug in headset jack [8086:9d70].

[Bin Li]

[Impact]

 * When plug in headset jack, you can't view any item in unity-control-center, so you can't change the volume.

 * For the situation of one pulseaudio port has 2 or more jacks, it will bring some change, in the past, if one of the jacks is plugged and other jacks are not plugged, the pulseaudio will print out "Availability of port '%s' is inconsistent!" and will not set this pulseaudio port to available, this is a bug for pulseaudio.

 * After applying this patch, this issue can be addressed by this patch.

[Test Case]

 * Reproduce steps:
1. Install 14.04.5 image on P50s
2. Login system
3. $ sudo apt-get update
4. $ apt-get dist-upgrade
sudo apt-get install --install-recommends linux-generic-lts-xenial xserver-xorg-core-lts-xenial xserver-xorg-lts-xenial xserver-xorg-video-all-lts-xenial xserver-xorg-input-all-lts-xenial libwayland-egl1-mesa-lts-xenial
5. Reboot the system
6. Login system
7. Open Sound setting window
8. Plug headset jack, unplug headset jack.

[Regression Potential]

 * For most of the situations like one pulseaudio port only has one jack, this patch will not bring any change. So there is no potential regression.

[Other Info]

 * The kernel is 4.4.0-47, and the pulseaudio is 1:4.0-0ubuntu1.1

[Bin Li (binli)]

I built the pulseaudio with the patch in below, it works fine after test.

commit d5fec4ca7af9241d0c2ae17df40d0fb1c18c74a0
Author: Sjoerd Simons <email address hidden>
Date: Sun Nov 16 23:15:50 2014 +0100

    Alsa: Correct port availability with multiple jacks

    In case there are two independent jacks for one port (e.g. Dock
    Headphone Jack and Headphone Jack), the availability ends up being
    incorrect if the first one was _NO (not plugged) and the second gets
    _YES (plugged). Also pulse complains about the state being inconsistent
    which isn't true.

    Fix this by preferring more precise states (yes/no) over unknown and yes
    over others. However in case a plugged jack makes the port unavailable
    let that overrule everything else.

[Bin Li (binli)]

Here is the patch.

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "multiple_jacks.patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]

[Hui Wang (hui.wang)]

SRU request URL:

https://code.launchpad.net/~hui.wang/pulseaudio/pulseaudio-trusty-proposed-lp1643812/+merge/311905

[Luke Yelavich (themuso)]

Hui, could you please add relevant information about the regression potential of this bug fix, and anything else you feel is important for the SRU? I'm ok with it and will upload, but think a little more information is needed.

[Hui Wang (hui.wang)]

Ｆｏｒ　most of the situations like one pulseaudio port only has one jack, this patch will not bring any change. So there is no potential regression.

For the situation of one pulseaudio port has 2 or more jacks, it will bring some change, in the past, if one of the jacks is plugged and other jacks are not plugged, the pulseaudio will print out "Availability of port '%s' is inconsistent!" and will not set this pulseaudio port to available, this is a bug for pulseaudio. After applying this patch, this issue can be addressed by this patch. I also think it will not bring any regression.

[Bin Li (binli)]

@themuso

 I checked the trusty-propsed channel, there are still not new pulseaduio, what's the status of this issue? Thanks a lot!

[Luke Yelavich (themuso)]

The upload was rejected due to lack of SRU information. Could you please add that according to
https://wiki.ubuntu.com/StableReleaseUpdates#Procedure

Thanks.

[Bin Li (binli)]

@themuso,

 Done, I'd updated the description with the template of SRU. Thanks a lot!