i use a lenovo y560 and has ubunto 12.04 and win 7 installed when i boot into ubunto i find that the ati car is always on which drains the battery and overheats the system is there any to switch off the ati graphics and use intel hd in ubuntu

ati hd 5730 is the graphics card that i use and it has switchable graphics in it.

in bios the only two options for video adapter is discrete and switchable

after installing ati driver from amd website i am getting a commamd prompt as log in screen

first error message comes as Your system is running in low-graphics mode with options to run in low graphics mode this time reconfigure exit all three options i am stuck i need to manually reboot the system