This patch made by upstream kernel addresses an ACPI EC issue on modern laptops notably
recent ASUS models due to the way
Windows 8.1 and recently 10 handle ECDT. It will be nice to implement it on Fedora kernel
until upstream merges it .
Here is the link of the patch: https://bugzilla.kernel.org/attachment.cgi?id=231401
I tested the patch following the guideline to build custom kernel (4.8.0rc4) and confirmed
the affected laptop ASUS X550ZE got its hotkeys