This problem has been just resolved in Sailfish OS. When looking for a solution of a microphone problems with mako, I stumbled on this bugreport and would like to contribute back. I hope that the same solution would work for Ubuntu.
In Sailfish, the wrong microphone was loaded during the phonecalls. If Ubuntu comes with the logcat, it can be checked as described in http://forum.xda-developers.com/showpost.php?p=65898089&postcount=441 . In short, we were getting the microphone without any noise cancelling. The reason for selection of wrong microphone was in a bug in libhybris. Namely, any property with long name in build.prop was not loaded correctly due to the wrong checking of the property name length. It was fixed by https://github.com/libhybris/libhybris/pull/313 After this patch, the microphone is loaded correctly and sounds as it is in Android. I am sure that this fix would work with all modems. I am personally using the latest one. Hopefully, that would resolve the bug in Ubuntu as well. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1318360 Title: Poor microphone quality (mako) Status in pulseaudio package in Ubuntu: Confirmed Bug description: After months of complaints from people talking to me on the phone (mako ubuntu touch), I finally got around to use multiROM to dual boot Ubuntu Touch and Android. Several people can confirm that there is a noticable difference in terms of sound/microphone quality between Android and UT in phone calls. With UT, my voice gets distorted to an extent that person at the other end have real difficulties to hear what I am saying, while with Android call quality is much better with no distortion. I have had a suspicion for a long time that this might be a software and not a hardware issue. After trying Android and Ubuntu on the same hardware I believe this suspicion is proved correct. This issue has persisted in all the builds I have tried since at least the beginning of the year, but probably longer. I am now at r17 of Utopic. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1318360/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
