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Hello Ubuntu citizens,

I am on Ubuntu 12.04 LTS (up-to-date) and was trying to install the new Bumblebee 3.1

First, I tried to remove Bumblebee first using:

sudo apt-get install ppa-purge 
sudo ppa-purge ppa:bumblebee/stable

Then I re-install using:

sudo add-apt-repository ppa:bumblebee/stable 
sudo apt-get update 
sudo apt-get install bumblebee bumblebee-nvidia linux-headers-generic

The last command gave me error:

Reading package lists... Done
Building dependency tree 
Reading state information... Done
E: Unable to locate package bumblebee
E: Unable to locate package bumblebee-nvidia

What did I do wrong?

I looked around for a couple hours but got nothing. Can anyone help me out please?

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After hours of googling to no avail, I managed to solve it:

Go to Update Manager > Settings... > Other Software (tab) > (tick both) Bumblebee PPAs

Apparently, using the purge commands somehow unticked them. Hope this will help someone.

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