I have an Asus U36 laptop running Ubuntu 11.04 with two graphic cards - one from Intel which is quite sufficient for me, the second from NVIDIA which consumes a lot of battery while not even working.
How can I disable the NVIDIA graphics card?
Answer
Depending on which driver you are using for the nVidia card (nouveau, nv or nvidia) - you should be able to see it with lsmod - the solution is to blacklist it to udev. For example, if your driver is nouveau, edit the /etc/modprobe.d/blacklist.conf and append a line containing blacklist nouveau, then reboot and lsmod again - it shouldn't be there any more.
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