the problem was solved by adding "LC_ALL=en_US.UTF-8" and "LANG=en_US.UTF-8" to /etc/environement and now everything is working fine, (don't understand why but it works ...)
** Summary changed: - Gnome-terminal won't start + Gnome-terminal won't start[solved] -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-terminal in Ubuntu. https://bugs.launchpad.net/bugs/1568272 Title: Gnome-terminal won't start[solved] Status in gnome-terminal package in Ubuntu: New Bug description: I'm having a problem when trying to launch the gnome terminal: - It doesn't react when i try to directly launch gnome-terminal, - I get this error when i try to launch it via xterm : https://pastee.org/35jkp, - And finally it launches just well if i "sudo gnome-terminal" via xterm, ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: gnome-terminal 3.16.2-1ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-35.40-generic 4.2.8-ckt5 Uname: Linux 4.2.0-35-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CurrentDesktop: GNOME Date: Sat Apr 9 13:27:22 2016 InstallationDate: Installed on 2016-04-09 (0 days ago) InstallationMedia: Ubuntu-GNOME 15.10 "Wily Werewolf" - Release amd64 (20151021) JournalErrors: No journal files were found. -- No entries -- ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> SHELL=/bin/bash SourcePackage: gnome-terminal UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-terminal/+bug/1568272/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

