"Unable to locate package cinnamon" when trying to install cinnamon

Question

i want to install cinnamon on ubuntu 14.04, but i get an error "unable to locate package cinnamon"

sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-stable
sudo apt-get update
sudo apt-get install cinnamon

E: Unable to locate package cinnamon

yes, i did try sudo apt-get update and it didn't work.

Solution

You are receiving this error because there is no stable version of the cinnamon package in ppa:gwendal-lebihan-dev for trusty - it's under development (now cinnamon nightlies are only available for trusty). If you want to install the development version of cinnamon (ie,nightlies) then run the below commands in a terminal:

sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-nightly
sudo apt-get update
sudo apt-get install cinnamon