apt-get purge. Since then, when I want to add a repository, I get an error. Sometimes Ubuntu shows an error and says that
add-apt-repository has closed unexpectedly.
This error appears when in the Terminal:
$ sudo add-apt-repository ppa:bumblebee/stable Traceback (most recent call last): File "/usr/bin/add-apt-repository", line 125, in <module> ppa_info = get_ppa_info_from_lp(user, ppa_name) File "/usr/lib/python2.7/dist-packages/softwareproperties/ppa.py", line 80, in get_ppa_info_from_lp curl.perform() pycurl.error: (7, "couldn't connect to host")
I'm using Ubuntu 12.04 LTS.