Gabriel Zhi Chen, as per http://support.lenovo.com/us/en/products /laptops-and-netbooks/thinkpad-edge-laptops/thinkpad-e555 an update to your computer's buggy and outdated BIOS is available (1.15). If you update to this following https://help.ubuntu.com/community/BIOSUpdate does it change anything?
If it doesn't, could you please both specify what happened, and provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date Once the BIOS is updated, and the information above is provided, then please mark this report Status Confirmed. Thank you for your understanding. ** Tags added: bios-outdated-1.15 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1434372 Title: [Lenovo E555] Screen of laptop 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 _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : [email protected] Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
