Comment 442 for bug 1734147

The description of this bug has been updated for how to repair affected BIOS. If you are still suffering from this issue and the Ubuntu system on your laptop is functional, please give it a try. Including the solution into v4.13 kernel is being investigated. However, if you can no longer boot to Ubuntu for some reasons, besides posting your questions here, or are two other excellent support channels that you can ask for help and advice from the wider community.