[BUG]: Panel Backlight Control isn't working on Legion S7-15ACH6 Laptop (Lenovo) - Type 82K8

[deadline-frontwind]

Version

2.14.1

OS

Windows 11 22H2 22621.1848

Device

Legion S7-15ACH6 Laptop (Lenovo) - Type 82K8

BIOS version

HACN40WW

What's wrong?

When switching on Panel Backlight Control feature,I found my laptop backlight didn't change.

How to reproduce the bug?

1.open the application 2.turn on/off "Panel Backlight Control" feature

What is the behavior that you expected?

Panel Backlight should turn on /off as I turn on/off the feature

Logs

log_2023_06_22_04_34_16.txt

Do you have Lenovo software installed?

• [ ] Lenovo Vantage is installed
• [X] Lenovo Hotkeys is installed
• [ ] None of the above

Did you disable any Lenovo software using Lenovo Legion Toolkit?

• [ ] Lenovo Vantage
• [X] Lenovo Hotkeys
• [ ] I disabled some things on my own (please write below what you did)

Additional information

No response

[BartoszCichecki]

If you see the option it means that your laptop claims it supports panel logo backlight control using Lenovo lighting methods. However if it doesn't work it means that you have one of the models which falsely indicate that they support it, in which case there isn't much I can do. You can remove the option from the Dashboard and just ignore it (use the Customize option at the bottom).

I will keep this open, but I am not sure if there is a better solution for this.

[BartoszCichecki]

Btw, could run this on PowerShell as admin Get-WmiObject -namespace root\WMI -class LENOVO_LIGHTING_DATA and post the output here?

[deadline-frontwind]

result.txt

[BartoszCichecki]

Yup, that confirms it:

Active                   : True
Brightness_Level         : 0
Control_Interface        : 1 // 1 means that it can be controlled
Default_Brightness_Level : 0
Default_State            : 1
InstanceName             : ACPI\PNP0C14\GMZN_3
Lighting_Id              : 3 // This is panel logo
Lighting_Type            : 0 // 0 indicates it can be controlled with lighting methods
State_Type_Num           : 2

So, it might be an issue in this BIOS version or in general with all BIOSes on this machine type.

[BartoszCichecki]

@deadline-frontwind Does you laptop originally used Corsair iCue to control backlight?

[deadline-frontwind]

No,I just use Fn+L to control panel backlight through Lenovo Hotkeys.

On Mon, Jun 26, 2023, 15:57 Bartosz Cichecki @.***> wrote:

@deadline-frontwind https://github.com/deadline-frontwind Does you laptop originally used Corsair iCue to control backlight?

— Reply to this email directly, view it on GitHub https://github.com/BartoszCichecki/LenovoLegionToolkit/issues/803#issuecomment-1606912812, or unsubscribe https://github.com/notifications/unsubscribe-auth/ATHXIFS6DDLWA7NQJR7QGUDXNE6GPANCNFSM6AAAAAAZPUMJWE . You are receiving this because you were mentioned.Message ID: @.***>

[deadline-frontwind]

I tried to enable Lenovo Hotkeys and surprisingly found that Fn+L panel backlight control works...

[henry-ji]

I am using the same device and the same bios but I don't have this problem, so maybe there's something wrong with you lenovo hotkeys.

P.S. isn't the backlight controlled by Fn + space