See https://github.com/rncbc/qjackctl/issues/96 for the error messages.
I have just confirmed this by building qjackctl with jack2 as an input, verifying the settings are unchanged, and starting jackdbus from qjackctl.
See https://github.com/rncbc/qjackctl/issues/96 for the error messages.
I have just confirmed this by building qjackctl with jack2 as an input, verifying the settings are unchanged, and starting jackdbus from qjackctl.