The sources are set during installation depending on the selected timezone and language, and will generally work well. But there are many instances where a user might wish to change those selections.
- the automatic assignment at installation may be wrong in some cases
- the user may change residency
- a new mirror may become available that is much closer, faster or more reliable
- an existing mirror may change its URL
- the mirror being used may go offline
Tab: Default repo
When Repo Manager opens, the screen displays the available mirrors stored in /usr/share/mx-repo-manager/repos.txt. An entry also exists called "Restore repos" that will allow the user to select the 3 upstream sources that the mirrors track.
The repository currently active is indicated with a black radio button. When an alternative mirror is marked and Select is clicked, a dialog box pops up to confirm the selection. Keep in mind that the selection will begin functioning the next time the package sources are updated. This can be done manually by the user in a root terminal or in Synaptic; apt-notifier also updates on a set schedule.
Tab: Individual sources
The various repos are organized into a number of lists that can be found in /etc/apt/sources.lists.d . On this tab you can conveniently enable/disable individual repos with a single click. This can be very handy in some instances where you want to enable a repo to make a single installation/upgrade, but then disable it again to avoid any conflicts or problems. An example may help understand this option:
- Debian Multimedia -- occasionally used to install codecs or applications, but can interfere with standard repos if left enabled