The screen ceases to be black when the power plug is taken off or put in, that is: when a change occurs in the power supply. In that case, everything becomes normal.
-- Suspend failing on Dell Latitude E4310 https://bugs.launchpad.net/bugs/629117 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