i have Asus UX21A. I have problems with keys F5 and F6.
Fn+F1 - sleep
Fn+F2 - enable/disable BT + WLAN
Fn+F3 - keyboard backlight down
Fn+F4 - keyboard backlight up
Fn+F5 - brightness down
Fn+F6 - brightness up
It works on display a login and password to OS X 10.11. Once logged in, it stops working, but the brightness can be adjusted by a combination of SHIFT+F2 (down) and SHIFT+F3 (UP) ???????????????
Fn+F7 - on/off LCD
Fn+F8 - on/off external monitor (I do not know is working or not, have not tested.)
Fn+F9 -on/off trackpad
Fn+10 - mute
Fn+11 - Sound down
Fn+12 - Sound up
How to make the keys work properly?
I should be grateful if you still advise how to do:
1) 10.11 working display temperature and fan speed.
2) The charge status and battery capacity