I've found a workaround here: http://kb.huptas.net/2008/02/21/ubuntu-804-hardy-heron-issues-w -external-screen-and-intel-gma950-dell-latitude-d620/
That's exactly what's happening to me, i will try this solution. -- External screen goes BLACK or GRAY https://bugs.launchpad.net/bugs/217804 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs