Both of my laptops have most all of these symptoms. As mentioned in comment #13, the lowest brightness setting is also a symptom of this bug. I can't confirm what he/she is saying about the sessions brightness but I can say that lightdm is at lowest brightness when on resume after suspend by lid close. Furthermore, on system reboot the screen brightness remains at lowest brightness until I adjust it.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1303736 Title: Black screen after login from suspend in Xubuntu 14.04 To manage notifications about this bug go to: https://bugs.launchpad.net/xfce4-power-manager/+bug/1303736/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs