When you're running Ubuntu 13.10 or later, you can install the packages from the repositories (including Linux Mint 17, where the Ubuntu Universe & Multiverse repos are enabled by default), you don't need to use PPA's anymore!

1. (Ubuntu) Enable Universe & Multiverse repos. This can be done via the 'Software Sources' in Software Center.
2. sudo apt-get install bumblebee bumblebee-nvidia primus linux-headers-generic
3. Reboot.

And have fun!
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