>>> ERROR: /etc/vdr/themes/classic-default.theme.$$$: Permission denied
>>> ERROR: /etc/vdr/themes/sttng-default.theme.$$$: Permission denied

>You should fix these errors.

>>> No graphical window is opened. The vdr program doesn't stop.

>What do you expect? vdr operates on the tv output of the full-featured
>card. Just connect your tv set to the video output of your Nexus card.

Thank you Oliver.

Now I've fixed those problems about themes and lirc.
But my Nexus card doesn't have a tv-out plug.

I should configure vdr to use my computer monitor as video output
(if possible).
 I'm going to look once more at the documentation whether
something like that is possible and how.

Or maybe you have suggestions?

Thank you again
Mauro