[Plexmax]

I have a little problem that I most xbmc, maybe I exaggerated with the xorg.conf file, what should I do to resolve

Xlib: extension "RANDR" missing on display ":0.0".
Xlib: extension "RANDR" missing on display ":0.0".
RandR extension missing
Xlib: extension "RANDR" missing on display ":0.0".
RandR extension missing
Xlib: extension "RANDR" missing on display ":0.0".
RandR extension missing
Xlib: extension "RANDR" missing on display ":0.0".
RandR extension missing
xbmc.bin: ../xbmc/MathUtils.h:33: int MathUtils::round_int(double): Asserzione 'x > static_cast<double>((-2147483647 - 1) / 2) - 1.0' fallita.
/usr/bin/xbmc: riga 72: 2277 Aborted (core dump creato) /usr/share/xbmc/xbmc.bin "$@"


well as various attempts made on the xorg file cè was also an update of the system is the kernel of xbmc

[Plexmax]

resolved , thank