Comment 3 for bug 1516370

BTW: The "bold guess in the title", won't make sense now, as the title was originally saying that I thought a register was being written incorrectly, until I realised that the backlight does work correctly and it seems to be hotkeys related.

If the implementation is idea_laptop.c then I'm taking a guess that this will also be a problem with more recent kernels. My first task, I guess is to boot 15.10 from a stick and see what I get with vendor.