Oh yeah that old guy. Error as old as cgminer running USB devices. From the Compac/2Pac support thread:
Q. How to get past "USB init, open device failed" ... "you don't have privilege to access" error.
cd ~/git/vthoang/cgminer/
sudo usermod -G plugdev -a `whoami`
sudo cp 01-cgminer.rules /etc/udev/rules.d/
sudo reboot
You'll want to cd into the correct cgminer folder, but that is probably obvious. Either that, or run cgminer as root.
That solved the issue, thanks an bunch. what of the config file ? i will like to input my settings in it ... how do i create / locate it ..? looked through the cgminer directory looking for gekko.config i imagine but didnot find one ..