XDG_RUNTIME_DIR (/run/user/1000) is not owned by us (uid 0), but by uid 1000! (This could e.g. happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't do that.) **** List of CAPTURE Hardware Devices **** card 2: Generic_1 [HD-Audio Generic], device 0: ALC256 Analog [ALC256 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0