seem your BENQ display are connected DVI-I-1 connected primary not sure why default sink change to non available HDMI when you have both USB audio and onboard analog device available
https://wiki.ubuntu.com/PulseAudio/Log did you customise default.pa to select any specified sink ? control.37 { iface CARD name 'Line Out Front Jack' value true comment { access read type BOOLEAN count 1 } } control.38 { iface CARD name 'Line Out Surround Jack' value true comment { access read type BOOLEAN count 1 } } control.39 { iface CARD name 'Line Out CLFE Jack' value true comment { access read type BOOLEAN count 1 } } -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1445861 Title: Subwoofer drops out when playback ends To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1445861/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
