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You need to install a proprietary graphics driver for Nvidia. Run in terminal sudo apt-get install nvidia-331 nvidia-prime and reboot. You will be able to switch Intel and Nvidia adapters in "Nvidia Settings" program. It looks like Intel is enough for your activities.


You can also upgrade linux kernel Run in terminal sudo apt-get install linux-generic-lts-vivid and reboot.


You have hybrid graphics. Both adapters are powered all the time and that is way battery life is low. Nvidia adapter is new. So you need to install drivers. Run in terminal sudo add-apt-repository ppa:xorg-edgers/ppa sudo apt-get update sudo apt-get install nvidia-352 nvidia-prime sudo add-apt-repository -r ppa:xorg-edgers/ppa and reboot. If the driver ...

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