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

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Message-ID: <19347cce78e.1107b2a6f515198.6482303922487401469@mitchellaugustin.com>
Date: Tue, 19 Nov 2024 20:20:31 -0800
From: Mitchell Augustin <mitchell@...chellaugustin.com>
To: "Corentin Chary" <corentin.chary@...il.com>,
	"Luke D. Jones" <luke@...nes.dev>,
	"Hans de Goede" <hdegoede@...hat.com>,
	"Ilpo Järvinen" <ilpo.jarvinen@...ux.intel.com>,
	"platform-driver-x86" <platform-driver-x86@...r.kernel.org>,
	"linux-kernel" <linux-kernel@...r.kernel.org>
Subject: Re: platform/x86: asus-wmi: Keyboard backlight brightness does not
 work correctly on Asus ROG Zephyrus G15

Nevermind, upon further digging I found https://lore.kernel.org/all/20240713074733.77334-2-luke@ljones.dev/, 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 
 >