New comment by ScrelliCopter on void-packages repository https://github.com/void-linux/void-packages/issues/20858#issuecomment-612298755 Comment: Looks like Mumble 1.3.0 always tries to connect to JACK on startup regardless of backend settings. Seems this was fixed upstream in https://github.com/mumble-voip/mumble/pull/3990 in master. I'll try patching 1.3.0 with this change and see if it fixes the problem.