Following https://wiki.debian.org/DebianTesting I have set the following etc/apt/sources.list file:
alobo@Delia:~$ more /etc/apt/sources.list # # deb cdrom:[Official Debian GNU/Linux Live 9.4.0 xfce 2018-03-10T11:37]/ stretc h main #deb cdrom:[Official Debian GNU/Linux Live 9.4.0 xfce 2018-03-10T11:37]/ stretch main deb http://ftp.es.debian.org/debian/ testing main deb-src http://ftp.es.debian.org/debian/ testing main deb http://security.debian.org/debian-security testing/updates main #deb-src http://security.debian.org/debian-security stretch/updates main deb-src http://security.debian.org/debian-security testing/updates main # stretch-updates, previously known as 'volatile' deb http://ftp.es.debian.org/debian/ testing-updates main deb-src http://ftp.es.debian.org/debian/ testing-updates main deb http://httpredir.debian.org/debian/ testing main contrib non-free but Synaptics reports different repositories: https://www.dropbox.com/s/spwovspzu6hqrvp/Screenshot%20from%202018-07-04%2007-42-42.png?dl=0 Do I have a conflict? Is there anything else I should do to have a properly set Debian Testing system? Thanks