SUMMARY It is not possible to set volume for left and right headphone STEPS TO REPRODUCE 1. Open settings and go to 'Audio' tab 2. For any audio device, click on 'Balance' button and change balance 3. Play some music OBSERVED RESULT Both headphones have equal volume EXPECTED RESULT One headphone is louder than another SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch linux 5.10.66 (available in About System) KDE Plasma Version: 5.22.5 (Bug is present since 5.22.3) KDE Frameworks Version: 5.86.0 Qt Version: 5.12.2 ADDITIONAL INFORMATION From journald: systemsettings5[15596]: file:///usr/share/kpackage/kcms/kcm_pulseaudio/contents/ui/DeviceListItem.qml:166: TypeError: Property 'setChannelVolume' of object [object Object] is not a function systemsettings5[15596]: file:///usr/share/kpackage/kcms/kcm_pulseaudio/contents/ui/DeviceListItem.qml:166: TypeError: Type error
*** This bug has been marked as a duplicate of bug 439751 ***