Arch Linux

brianbaligad

Member

Registered: 2013-08-12

Posts: 22

Chromebook keyboard backlight leds

I have learned a great deal by reading the wiki and searching this forum.  One issue I am still trying to understand is how the keyboard leds on my Chromebook Pixel can be controlled.  Now that chromeos_laptop is built into the kernel, I would have suspected a /sys/class/leds/chromeos directory to exist, allowing me control of the keyboard backlight.  I can confirm chromeos_laptop is being loaded with lsmod.    I also built linux-mainline (3.14rc7) from AUR (which is amazing btw) and after booting from this kernel leds/chromeos directory was still missing. Any advice?

Last edited by brianbaligad (2014-03-22 23:24:30)

\hbar

Member

Registered: 2014-03-15

Posts: 165

Re: Chromebook keyboard backlight leds

On my machine (Macbook), the file in /sys/class/leds is a symlink to /sys/devices/platform/... perhaps your just missing the link and the actual file is somewhere else. You could perhaps try a search through sys using the find utility e.g.

find /sys -name '*backlight'

brianbaligad

Member

Registered: 2013-08-12

Posts: 22

Re: Chromebook keyboard backlight leds

Thanks for taking the time to respond.  I can confirm that there are no other *backlight directories in /sys referring to the keyboard leds.