Comment 3 for bug 337945

I can manually control keyboard backlight with
echo 255 > /sys/devices/platform/applesmc.768/leds/smc::kbd_backlight/brightness
to fully turn on or echo 0 to turn it off... This was after the install of applesmc-dkms.

There does seem to be some oddity traversing the directory structure there as it seems to loop.

My remaining issue is the ability to adjust this value through the Fn keys like we can with the display backlight. Anyone know what is missing to make that work or a workaround to just send 0 or 255 via those F5 and F6 keys?