Hi! It finally occurred. I was watching a video on youtube and there were two tabs on the browser. When I closed the other tab, GDM restart and I had the screen of login. In attach my .xsession-errors
** Attachment added: ".xsession-errors" http://launchpadlibrarian.net/13407677/.xsession-errors -- On closing Epiphany tab, it restart the Gnome session https://bugs.launchpad.net/bugs/208864 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs