package mysql-server-5.7 (not installed) failed to install/upgrade: il sottoprocesso nuovo script pre-installation ha restituito lo stato di errore 1

[Paolo Sferrazza]

mysql doesn't stop/start,Unit mysql.service not loaded.

ProblemType: Package
DistroRelease: Ubuntu 17.04
Package: mysql-server-5.7 (not installed)
ProcVersionSignature: Ubuntu 4.10.0-21.23-generic 4.10.11
Uname: Linux 4.10.0-21-generic i686
ApportVersion: 2.20.4-0ubuntu4.1
Architecture: i386
Date: Sun May 28 15:26:22 2017
ErrorMessage: il sottoprocesso nuovo script pre-installation ha restituito lo stato di errore 1
RelatedPackageVersions:
 dpkg 1.18.10ubuntu2
 apt 1.4
SourcePackage: mysql-5.7
Title: package mysql-server-5.7 (not installed) failed to install/upgrade: il sottoprocesso nuovo script pre-installation ha restituito lo stato di errore 1
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.apparmor.d.usr.sbin.mysqld: 2017-03-28T22:59:06
mtime.conffile..etc.init.d.mysql: 2017-03-28T22:59:06
mtime.conffile..etc.logrotate.d.mysql-server: 2017-03-28T22:59:06
mtime.conffile..etc.mysql.debian-start: 2017-03-28T22:59:06
mtime.conffile..etc.mysql.mysql.cnf: 2017-05-21T12:10:30.563006

[Nish Aravamudan (nacc)]

Hello and thank you for filing this bug report. It appears you installed a non-ubuntu version of MySQL at some point:

Selezionato il pacchetto mysql-server-5.7 non precedentemente selezionato.
Preparativi per estrarre .../mysql-server-5.7_5.7.18-0ubuntu0.17.04.1_i386.deb...
Aborting downgrade from (at least) 10.1 to 5.7.
If are sure you want to downgrade to 5.7, remove the file
/var/lib/mysql/debian-*.flag and try installing again.
dpkg: errore nell'elaborare l'archivio /var/cache/apt/archives/mysql-server-5.7_5.7.18-0ubuntu0.17.04.1_i386.deb (--unpack):
 il sottoprocesso nuovo script pre-installation ha restituito lo stato di errore 1

Please follow the instructions as specified in the above message.

[Launchpad Janitor (janitor)]

[Expired for mysql-5.7 (Ubuntu) because there has been no activity for 60 days.]