Hi Karel and L3mce,
Last night I was sooo tired that I didn't had the energy to write the entire story, so Ill try to explain a little bit more for education purpose only
ZOTAC ZBOX model :1d41
ZOTAC MAG Ill get this info later
Installation of the core was from a snapshot, Ill get the number later, Im not at home yet. What I really did is that the Core was updated/upgraded several times until last week when I started doing both md's. Both md's were image rebuild twice just to make sure it was done with the latest upgrades.
What where the issues:
MAG: no video playback unter UI V2, also no screensaver available (moving background images), the rest worked perfectly. Sound via HDMI by only selecting it on the wizard, no issues during the entire process of the wizard. Downgrading the UI to v1 I was able to watch videos but only one :S, if I try to load another, the video box was gone
ZBOX: same as above except no audio.
Both machines played video perfectly within KDE
I left the MAG as control box and started messing up with the zbox. Last night after upgrading nvidia drivers to 295 It did nothing to solve the video problem until I did something else, apt-get upgrade last night, it did upgraded something else because I got again the avwizard and after it. Video is perfect. I believe it was not related to the upgrade, I believe it was related to running the avwizard after upgrading the video drivers. I will try to do the same with the MAG (but I will get l3mce info first, sounds interesting, before erasing the evidence!.)
After manually upgrading ALSA to 1.25, aplay and mixer sees nvidia, unmuted all the channels but still no sound. I guess Im closer to success, I hope!
As soon as I get back home Ill post the scripts results and details.