SUMMARY I found out recently that even when a headphone is plugged into my laptop the audio plays in both outputs, the computer's speakers and the headphone as well. It stops only when I select from the panel which of the outputs should play. STEPS TO REPRODUCE 1. Connect a headphone to laptop 2. Play an audio 3. Inspect the output OBSERVED RESULT Audio plays from the computer's speakers and the headphone as well. EXPECTED RESULT I expect the computer's audio to be muted because the headphone is connected. SOFTWARE/OS VERSIONS Operating System: KDE neon 5.21 KDE Plasma Version: 5.21.5 KDE Frameworks Version: 5.81.0 Qt Version: 5.15.2 Kernel Version: 5.4.0-72-generic OS Type: 64-bit Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-8565U CPU @ 1.80GHz Memory: 15.3 GiB of RAM Graphics Processor: Mesa Intel® UHD Graphics 620
This would be an issue in PulseAudio itself; please report to https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/issues/