Internal MIC stopped to work on 18.10

[alain.roger]

After upgrading my mon's laptop from Kubuntu 18.04 to 18.10, the internal Mic stop to work.

Everything works well (speakers, etc) however no more sound comes as entry from Internal Mic.
I checked and she has chipset ALC269VB

i update to alsa-driver 1.1.7 without success.
i checked alsamixer and everything seems ok as with pavucontrol.

I upgraded my laptop too to 18.10 and i have no issue with internal mic but i do not have the same chipset.
---
ProblemType: Bug
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: paulette 4997 F.... pulseaudio
 /dev/snd/pcmC0D0c: paulette 4997 F...m pulseaudio
 /dev/snd/pcmC0D0p: paulette 4997 F...m pulseaudio
CurrentDesktop: KDE
DistroRelease: Ubuntu 18.10
InstallationDate: Installed on 2018-02-28 (259 days ago)
InstallationMedia: Kubuntu 17.10 "Artful Aardvark" - Release amd64 (20180105.2)
Package: pulseaudio 1:12.2-0ubuntu4 [modified: usr/share/pulseaudio/alsa-mixer/paths/analog-input-internal-mic.conf usr/share/pulseaudio/alsa-mixer/paths/analog-input-mic.conf]
PackageArchitecture: amd64
Tags: cosmic
Uname: Linux 4.19.0-041900-generic x86_64
UpgradeStatus: Upgraded to cosmic on 2018-11-04 (10 days ago)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 05/24/2011
dmi.bios.vendor: Acer
dmi.bios.version: V1.11
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: JE50_HR
dmi.board.vendor: Acer
dmi.board.version: Base Board Version
dmi.chassis.type: 10
dmi.chassis.vendor: Acer
dmi.chassis.version: V1.11
dmi.modalias: dmi:bvnAcer:bvrV1.11:bd05/24/2011:svnAcer:pnAspire5750G:pvrV1.11:rvnAcer:rnJE50_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.11:
dmi.product.name: Aspire 5750G
dmi.product.version: V1.11
dmi.sys.vendor: Acer

[Daniel van Vugt (vanvugt)]

Please run this command to send us more information about the system:

  apport-collect 1803192

[alain.roger (rafnews)]

apport information

[alain.roger (rafnews)]

apport information

[alain.roger (rafnews)]

apport information

[alain.roger (rafnews)]

apport information

[alain.roger (rafnews)]

apport information

[alain.roger (rafnews)]

apport information

[alain.roger (rafnews)]

Here they are

[alain.roger (rafnews)]

Any news regarding this issue ?

[Daniel van Vugt (vanvugt)]

I can't see anything obviously broken so suggest reporting the bug to the PulseAudio developers here:

  https://gitlab.freedesktop.org/groups/pulseaudio/-/issues

[Eduardo Barretto (ebarretto)]

Hi alain.roger,
Your issue doesn't look like a security issue.
I saw you reported it upstream as asked by Daniel.
So can we make this issue Public and mark it as not Security?
I am asking because I am not sure why you marked it as Private Security.
Thanks

[Marc Deslauriers (mdeslaur)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Daniel van Vugt (vanvugt)]

I can't seem to find the upstream bug. Can you share the link?

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 18.10 (cosmic) reached end-of-life on July 18, 2019.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed.