The volume control did not find any elements and/or devices to control. This means either that you don't have the right GStreamer plugins installed, or that you don't have a sound card configured.
Bolumen-kontrolak ez du kontroleko gailurik edo elementurik aurkitu. Honek adieraz nahi du GStreamer-en plugin-ak ez daudela ongi instalatuta, edo soinu-txartela ez dagoela konfiguratuta.