** Changed in: pulseaudio (Ubuntu Groovy)
Status: Incomplete => In Progress
** Changed in: pulseaudio (Ubuntu Focal)
Status: Incomplete => In Progress
** Changed in: pulseaudio (Ubuntu Focal)
Assignee: (unassigned) => Hui Wang (hui.wang)
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https://bugs.launchpad.net/bugs/1882161
Title:
module-switch-on-port-avaiable: switch the port on ucm devices based
on the priority
Status in HWE Next:
New
Status in pulseaudio package in Ubuntu:
In Progress
Status in pulseaudio source package in Focal:
In Progress
Status in pulseaudio source package in Groovy:
In Progress
Bug description:
This bug originates from an OEM private bug #1875597, then ubuntu
users reported 2 public bugs #1871329 and #1881659. The 2nd issue of
#1871329 and the 1st issue of #1881659 have the same root cause as
#1875597
[Impact]
On the Dell machines with multi function audio jack, after installing the
ubuntu 20.04 and if the audio driver is sof instead of legacy hda, the
headphone/headset can't output sound automatically after users plug in a
headphone/headset. This is different from ubuntu 18.04, on the 18.04, the
headphone/headset could output sound automatically after plugging in the audio
jack.
[Fix]
The root cause is the ucm2 conf defines 2 input devices: the Mic2 and Headset
MIC, and the pulseaudio parse the input device Headset MIC first then Mic2,
finally the audio jack is set to Mic2 mode, this make the audio jack can't
output sound anymore. To fix it, let the audio jack set to Headset MIC mode by
default (Headset MIC has higher priority than Mic2 in the ucm2 conf), to do so,
let pulseaudio send the device event to module-switch-on-port-available by the
order of priority in the umc2.
[Test Case]
applying the fix patch to pulseaudio, plug a headset/headphone to the multi
function audio jack, play sound from headset/headphone, the sound could be
heard from headset/headphone.
[Regression Risk]
Low, just do a small change to store the ucm devices by their priority. and
upstream just merged this patch.
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