Wnaeth rheolwr lefel y sain ddim canfod unrhyw elfennau a/neu ddyfeisiau i'w rheoli. Golyga hyn naill ai nad yw'r ategion GStreamer cywir wedi eu gosod, neu nad oes gerdyn sain wedi ei chyflunio.
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.