@Keng-Yu, please refer to xrandr logs under normal mode and abnormal mode. Thanks.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1434372 Title: [Lenovo E555] Screen of labtop will become black and never lighting after un-plug VGA cable To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1434372/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
