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Re: LED on keyboard



On Fri, 2017-01-06 at 00:38 +0100, Jan Niggemann wrote:
> Hello,
> 
> I'm building a 4.8.15 kernel (which is working great) for my Thinkpad  
> T460s. What bothers me, is that I can't get the LEDs on the F1 and F4  
> key working ((F1=mute, F4=mic on/off). I checked CONFIG_ directives  
> that seem relevant to me, but - well, I'm missing something. I have  
> enabled LED-related options as well as GPIO options.

I don't think these are controlled by an LED class driver.

> The relevant LEDs work fine using the backports 4.8 kernel  
> (4.8.0-0.bpo.2-amd64 #1 SMP Debian 4.8.11-1~bpo8+1 (2016-12-14) x86_64  
> GNU/Linux). I have diffed both configs, but didn't spot the relevant  
> option.
> 
> Which driver is needed for this, or which CONFIG_ directive?
> I'd be grateful for a pointer in the right direction on this.

Check CONFIG_THINKPAD_ACPI and related config symbols.

Ben.

-- 
Ben Hutchings
The generation of random numbers is too important to be left to chance.
                                                            - Robert
Coveyou

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