I have two different audio output devices: an internal sound card and an external DAC/amp.
When starting an OpenAL application (I first observed the issue with Minecraft, but I suspect it affects all applications that use OpenAL for audio playback), the internal sound card is selected for output, and I cannot change the device using
pavucontrol (or KMixer on Kubuntu). The option to select an alternate device is present, but choosing the device has no effect.
How can I select an alternate audio playback device for OpenAL applications?