QAudioRecorder fails to start recording

[Ben Brown]

The attached minimal code example demonstrates, how the QAudioRecorder fails to record (the status never changes from QMediaRecorder::StartingStatus=4 to QMediaRecorder::RecordingStatus=5). The QML label shows "This is not good!" and never recovers from this state.

To run the code, replace the mytype.h code from the SDK QML example with C++ back end (cmake). Executing the app starts a record/stop loop and eventually ends up in the "This is not good!" part.

Code: http://pastebin.ubuntu.com/11748282/

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Sturm Flut (sturmflut)]

Setting up the environment for the sample code needs a bit more work, you also have to add the "microphone" AppArmor policy and add QtMultimedia to the dependencies. I built a working QtCreator project around it and pushed it to to my Launchpad github repository:

lp:~sturmflut/+git/bug-1467219

I can confirm this bug, on my 15.04 development desktop the code fails after a couple of repetitions. Looking at the AppArmor policy it looks like QAudioRecorder accesses PulseAudio and gstreamer directly, so this might not be related to the media-hub?

[Ben Brown (ds150610ubuntu)]

Sorry, I forgot about these two additional requirements. Thanks for pointing it out!

[Ben Brown (ds150610ubuntu)]

I can no longer reproduce the bug. Thanks to whomever fixed this.