Screen fade to black after 10 minutes and never come back

Screen fade to black after 10 minutes and never come back

Im using Linaro Raring Server for Cubieboard A20 from here:
www.cubieforums.com/index.php?topic=807.0
After about 10 minutes, the screen goes to black, even I'm using keyboard
or mouse, so seems not be a screensaver to me, since not idle. Nothing I
can do to bring the screen back, only a reboot. My system still alive (my
TV shows signal is active).
I'm not using GUI, so answer in terminal commands.
I don't use GUI, but have a X11, because xbmc is installed on system. At
startup, xbmc starts without login.
Steps I've done:
1) Start system and XBMC. Auto login (root). Black screen after 10 min
even using keyboard/mouse.
2) Start without XBMC (and GUI). Auto login (root). Black screen after 10
min even using keyboard/mouse.
Tried this https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1072531
and this How to stop screen going black after 10 min
I think i'ts a custom system configuration, since I don't have xset and
can't find xorg.conf.
There is a X11 in init folder.