Chrome: double click, nothing happened, cannot launch the browser

Correct the ownership, assuming pipi is your username:

chown -R pipi:pipi /home/pipi

and the permissions for all folders:

find /home/pipi -type d -print0 | xargs -0 chmod 775

775 - These are the default permissions when you create a new folder.

From:

http://askubuntu.com/questions/618478/google-chrome-fails-to-start