EDIT: See comments.
.I am unable to launch mysql-workbench on my Fedora 22 machine. It is installed, or at least it seems so. Help is welcome.
[root@localhost /]# dnf info mysql-community-bench
Nome : mysql-community-bench
[root@localhost /]# uname -a
Linux localhost.localdomain 4.1.3-201.fc22.i686+PAE #1 SMP Wed Jul 29 20:36:37 UTC 2015 i686 i686 i386 GNU/Linux