[cowthink]

Hi,

though I think my problem's pretty specific, I just wanted to write it down so it might come in handy for someone in the same situation.

I'm running Gentoo Linux on an Intel Core i5 and a nvidia video card (gtx 560 ti) and have been using xbmc on various other Linux distributions. Without problems, always.

In Gentoo, though, xbmc started and showed the usual output on the terminal, but the window/screen stayed black. No sounds either.

The cause of my problem: After emerging the proprietary nvidia drivers, I forgot to set the OpenGL implementation from xorg-x11 to nvidia.
You can see the active OpenGL implementation by running

Code:

eselect opengl list

in a terminal. There's a blue star behind the active one.

The problem is fixed by running

Code:

eselect opengl set nvidia

in a terminal as root.