Microphone doesn't work on video calls and audio calls with speaker

[michelesr]

• I have searched open and closed issues for duplicates
• I am submitting a bug report for existing functionality that does not work as intended
• I have read https://github.com/signalapp/Signal-Android/wiki/Submitting-useful-bug-reports
• This isn't a feature request or a discussion topic

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Bug description

Since last week, when making a video call or a call with the speaker, the other part can't hear my voice. The microphone permission is granted and the Android icon that notifies microphone activity is displayed.

Steps to reproduce

• make a video call OR make a phone call and activate speaker
• try to talk or make some sound

Actual result: The other part doesn't hear the produced sound
Expected result: The other part hears the sound

Device info

Device: OnePlus 6T
Android version: 13 (Lineage OS 20-20240213-NIGHTLY-fajita)
Signal version: 6.46.7

Link to debug log

Link

[Captain-Sandwich]

I have the same problem on OnePlus 6 (enchilada)
Android version: 14 (LineageOS 21-20240306-NIGHTLY-enchilada)
Signal version: 7.0.2

I am working on generating a debug log, but also had the problem on lineage 20 and only upgraded to 21 because of the issue.

[Noxis73]

Same problem: OnePlus 6
Android version: 14 (LineageOS 21-20240313-NIGHTLY-enchilada)
Molly / Molly UP 7.1.3-1 (both Versions same issue)

I also had the problem on lineage 20

[lightweight]

I've got the same issue with Lineage 20 on fajita (OnePlus 6T)...

[alxn0]

I also have the same issue with OnePlus 6 (A6003) with Lineage 21 (21-20240305-migroG-enchilada). I had the bug on Lineage 20, and migrated to 21 hoping to fix this bug.

[rymiel]

I have the same issue on a Pixel 6 with Android 14. Just seems weird that everyone else with this issue seems to have a different phone than me

[T-Mike]

I experience the same problem with a OnePlus 6 (A6003) with Lineage 20.
This bug also happens when plugging headphones.

[Niyphelah]

I have the same problem on a Moto G7 Plus (lake) with LinegageOS 21 + MicroG. I am able to record voice notes & play them back without issue. I do also have the same issue with Telegram -- so I think this issue is related to LineageOS and not Signal itself.

CRITICAL, SHOWSTOPPER issue in LineageOS 21: Microphone not functioning with Apps that use RTP/RTCP, eg., Google Voice, Signal, etc.
https://gitlab.com/LineageOS/issues/android/-/issues/7007

[Captain-Sandwich]

I reported the issue for OnePlus 6 as well on the lineage issue tracker and we already have a fix merged: https://review.lineageos.org/c/LineageOS/android_device_oneplus_sdm845-common/+/390109

It should be in the next build on April 24. I am going to report back if it fixes the issue.

[michelesr]

I've tried the proposed fix by manually editing build.prop in my OnePlus 6T and it works fine.

[Captain-Sandwich]

The new lineage build fixed the issue on enchilada/OnePlus 6.
I guess this can be closed

[Forage]

I can confirm that the 5 may build of lineageos4microg, which includes the mentioned fix, works as well. My OnePlus 6 can be used on speaker again.