Re: platform/x86: asus-wmi: Keyboard backlight brightness does not work correctly on Asus ROG Zephyrus G15

From: Mitchell Augustin
Date: Tue Nov 19 2024 - 23:20:51 EST


Nevermind, upon further digging I found https://lore.kernel.org/all/20240713074733.77334-2-luke@xxxxxxxxxx/, which wasn't pulled into
my downstream kernel yet and verified that it does work for me.

Thanks,
Mitchell Augustin


---- On Sun, 17 Nov 2024 10:11:52 -0800 Mitchell Augustin wrote ---

> Hello,
>
> On my Zephyrus G15 (GA503RM-G15.R93060),
> my keyboard brightness controls do not work. I believe I have traced
> this down to being a kernel issue, based on the fact that my Gnome
> control center slider and `asusctl -k` do result in
> `/sys/class/leds/asus::kbd_backlight/brightness` being updated, but the
> changed value of `/sys/class/leds/asus::kbd_backlight/brightness` is not
> reflective of the actual brightness of my keyboard, which always
> remains unchanged. (I can also confirm that other keyboard/fan control
> features do work, such as the keyboard profile switcher, custom fan
> curves, etc. - so it just seems to be the brightness that is broken.)
>
> If this is likely just a case where I would need to poke around my hardware to
> find the correct values to write for brightness control to work on my
> specific SKU, I would be happy to do that and contribute it back here, but I
> will need some guidance on where to look for that info.
>
> Let me know if that would be helpful, or if there's any other info I can provide to help fix this bug.
>
> Thanks,
>
> Mitchell Augustin
>