Long story short: sent a patch to Alex Deucher, the patch got submitted and
it's in 4.3 kernel now. However, I get a black screen after system startup, or
it can happen randomly, especially after bug screen updates. I'm on freshly
installed Arch Linux 64-bit UEFI. I think the issue is connected with the
recent commit to the si_dpm.c, maybe there are ID conflicts. Here's a link to
that new patch:
https://github.com/torvalds/linux/commit/2b02ec79004388a8c65e227bc289ed891b5ac8c6

And link to my patch:
https://github.com/torvalds/linux/commit/e78654799135a788a941bacad3452fbd7083e518

Maybe we should make some identification code in that file? Oh, I'll also try
to compile the 4.3 kernel with that Asus line removed. Any ideas other than
those above?