Roberto, based on your description, the problem does not seem specific to gstreamer (VLC does not use gstreamer). So I am changing the package to pulseaudio for now to help gather information. Please run the following command from the affected machine to automatically gather audio information: apport-collect 1934400
** Package changed: gstreamer1.0 (Ubuntu) => pulseaudio (Ubuntu) ** Changed in: pulseaudio (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1934400 Title: Audio signal interference when using in conjunction with firefox To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1934400/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs