*** This bug is a duplicate of bug 838166 ***
https://bugs.launchpad.net/bugs/838166
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Ubuntu better. This particular bug has already been reported and is a
duplicate of bug #838166, so it is being marked as such. Please look
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https://bugs.launchpad.net/bugs/821582
Title:
package gdm not installed failed to install/upgrade: le sous-
processus script pre-removal installé a retourné une erreur de sortie