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                    2012
                
            
            
                24 Sep
                
                '12
                
            
            
            
        
    
                12:06 p.m.
            
        On Mon, Sep 24, 2012 at 10:12:19AM +0200, David Henningsson wrote:
Attached is the codec info.
We generally recommend people to submit the entire alsa-info, rather than just the codec info (which, btw, was an empty attachment).
woops :)
In particular; if you're having a thinkpad, the mute LED is controlled through thinkpad-acpi, and if you're having an HP, it's usually connected to the codec in a way hinted by BIOS. Given that you have a conexant codec, I'm guessing it's a thinkpad.
Thanks (also to Takashi) for this explanation. Indeed this is a ThinkPad (W520). I'll look into thinkpad-acpi :)
Kind regards,
Arnout