I'm running ubuntu 13.04. I have an asus ul80vt. There is an integrated intel gpu and an nvidia geforce g210m. I want to disable the intel gpu and just use the nvidia. I have found one helpful source at this. But this method involves the directory at /sys/kernel/debug/vgaswitcheroo/switch. I do not have this directory and I have looked as root and checked hidden files, vgaswitcheroo isn't present in /sys/kernel/debug. I'm not really sure where to go from here.