I'm adding a few corrections/details. Actually sound does not work readily at boot (playing a tune in rhythmbox would not produce any sound).
To 'activate' sound I have to go to settings and click on Test Speakers. After that the speakers would work normally for any period of time as long as there is no playing interruption. If on the other hand I leave the speakers unused for a few minutes, then they won't produce any sound any more unless I reboot and click on test speakers again. When they are in that silent state, pavucontrol shows the signal that is supposed to be sent to the speakers. Other things that I have checked : The speakers work normally under Windows on the same device (dual boot). They can be used over bluetooth by another device whatever the situation (playing not playing) with ubuntu. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1730063 Title: [USB-Audio - Audioengine HD3, playback] fails after a while To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1730063/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
