How 10bpc Debian

Hallo

Hardware:
Quadro 5000 — Displayport kabel — Montor ASUS PB287Q 10bpc

http://jentografie.de/10bpc.png

but i dont can work aboout 10 bpc???

http://nvidia.custhelp.com/app/answers/detail/a_id/3050/~/how-to-enable-30-bit-color-on-linux