Two days back I upgraded ubuntu 19.04 into 20.04 lts. However, I noticed that the update got stuck at a particular stage saying 'Removing gnome-logs snap'. This window stays forever

Screenshot of the error while updating:

screenshot of the error while updating

And the screen recording application Kazam is not recording audio. I tried with different screen recorders but of no use. No application detects the microphone. I looked for any changes in settings but everything was fine. I could see microphone detecting the sound from the dynamic bars. While trying to open it in terminal it shows this error

$ kazam
WARNING Kazam - Failed to correctly detect operating system

It was showing kazam failed to detect audio recording device few hours back. I uninstalled and reinstalled the application but nothing worked. I even installed PulseAudio volume controller but it neither detects any application that uses audio recording option.

Screenshot of PulseAudio volume controller detecting no recording device:

Screenshot of PulseAudio volume controller detecting no recording device

However, the Telegram desktop client is perfectly recording audio. I don't know what exactly happened with these applications.

This is the screenshot of Kazam not detecting the recording device:

This is the screenshot of Kazam not detecting the recording device

I want to make a lecture video for my students but I'm stuck with these issues for hours. I would have changed the OS altogether. But since I don't have a USB I can't try that option. Somebody please answer.

1 Answer 1


The issue is due the use of a deprecated python feature. This PR fixes it, so this should be OK if Kazam ever gets updated again.

Anyways, to fix your problem, as I commented here using that PR, you can run

sudo gedit /usr/lib/python3/dist-packages/kazam/pulseaudio/pulseaudio.py

And replace its content with this content.

  • 1
    I can't thank you enough! Worked perfectly well within seconds. I have been scratching my head over it for over 6 hours straight.. You saved my life.. Again, Thank you! Commented May 2, 2020 at 14:16
  • 1
    It worked for me. Thank you.
    – Andrei B
    Commented May 8, 2020 at 23:12
  • 1
    Thank you. For me, it also solves the problem.
    – Andrew K
    Commented May 19, 2020 at 12:14
  • 1
    Many thanks for the solution. Worked for me.
    – RayJ
    Commented May 31, 2020 at 7:51

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