this bug is similar with Bug #1288903, the main problem is: the ubuntu- session package was not installed when update.
I check that the ubuntu-session package is installed on the new installed 14.04. -- You received this bug notification because you are a member of Ubuntu Kylin Members, which is subscribed to Ubuntu Kylin. https://bugs.launchpad.net/bugs/1298237 Title: Cannot login the system after upgraded from 13.10 to 14.04 Status in Ubuntu Kylin: New Bug description: After upgraded from 13.10 to 14.04 at i386, Unity can't be started. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntukylin/+bug/1298237/+subscriptions -- Mailing list: https://launchpad.net/~ubuntukylin-members Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntukylin-members More help : https://help.launchpad.net/ListHelp

