Fwd: linux-image-6.12.94+deb13-amd64: does not detect ScreenPad on ASUS VivoBook

-------- Forwarded Message --------
Subject: 	linux-image-6.12.94+deb13-amd64: does not detect ScreenPad on 
ASUS VivoBook
Date: 	Sat, 11 Jul 2026 19:43:19 +0200
From: 	Ponali <[email protected]>
To: 	[email protected]



Hi,


I have made a list of everything that the sysfs attribute can return in 
6.12.90:


actual_brightness: 70
bl_power: 4
brightness: 70
max_brightness: 235
scale: unknown
type: raw
device/driver_override: (null)
device/modalias: platform:asus-nb-wmi
device/uevent: DRIVER=asus-nb-wmi
                MODALIAS=platform:asus-nb-wmi
power/async: disabled
power/control: auto
power/runtime_active_kids: 0
power/runtime_active_time: 0
power/runtime_enabled: disabled
power/runtime_status: unsupported
power/runtime_suspended_time: 0
power/runtime_usage: 0


In 6.12.94, only these files change:

bl_power: 0

max_brightness: 255


These files do not report any information:

uevent: [Blank file]
device/cpufv: [Permission denied]
power/autosuspend_delay_ms: [Input/output error]


For both kernels, setting the brightness to 0 has both brightness and 
actual_brightness report 0.

I cannot check the minimum brightness through uevent because it shows up 
as blank.


Regards,

Ponali