just upgraded M3 to M4 using console urpmi procedure as described in WIKI. Now there is no sound but KMix shows proper mixer content, sound configuration in MCC looks the same way like in M3 (snd_hda_intel) and hardware listing in MCC shows existence of MCP73 HD Audio card. Microphone input works because I can measure loudness and input volume in Skype test page. Bout the silence is in loudspeakers of connected monitor.
Any idea what I have to do?