audio_test.py: Unable to control recording volume. Test results may be wrong

[Leon Liao]

Th message "Unable to control recording volume.Test results may be wrong" show up when run audio_test.

Reproduce step:
$ ./audio_test.py
INFO:root:Using PulseAudio identifier 1 (alsa_input.pci-0000_00_1f.3.analog-stereo) for input
INFO:root:Using PulseAudio identifier 0 (alsa_output.pci-0000_00_1f.3.analog-stereo) for output
INFO:root:Player: Starting
INFO:root:Recorder: Starting
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
ERROR:root:Unable to control recording volume.Test results may be wrong
INFO:root:Sampling complete, ending process
INFO:root:Player: Stopping
INFO:root:Recorder: Stopping
INFO:root:FAIL: Test frequency of 5035 is not in one of the bands with magnitude peaks
INFO:root:WARNING: Microphone seems broken, didn'

[Rex Tsai (chihchun)]

The issue[1] is introduced by chagne for "bin:*.py: Fix all Flake8 errors". It seems the change is merged and released before it's even tested.

[1] plainbox-provider-checkbox - https://git.launchpad.net/plainbox-provider-checkbox/commit/?id=53a9dace03fea49a2de030e7cd1999155637b6ef

[Lukas Waymann (meribold)]

Currently audio/alsa_record_playback_automated and suspend/record_playback_after_suspend_auto almost always fail during SRU testing. I believe this bug is the cause of these failures. I'm not sure if there are other audio tests, or whether we are effectively unable to catch regressions related to audio playback and recording now. In case the latter is true, I would argue that a 0.55.1 plainbox-provider-checkbox point release with the fix for this bug is warranted.

[Pierre Equoy (pieq)]

Checked with:

networking/gateway_pingcheckbox-ng: 1.12.0rc1
checkbox-support: 0.49.0rc1
com.canonical.ce:oem: 1.0
certification-client: 0.44.0rc1
plainbox-provider-checkbox: 0.56.0rc1
plainbox-provider-resource-generic: 0.47.0rc1
plainbox-provider-tpm2: 1.15.0rc1

Can't reproduce the original issue when running the `audio_test.py` script on a laptop with 20.04 and the above Checkbox stack.