using leds on laptop

Brandon Gooch jamesbrandongooch at
Mon Feb 1 21:35:06 UTC 2010

On Mon, Feb 1, 2010 at 2:24 PM, Eitan Adler <eitanadlerlist at> wrote:
> I'm not sure if FreeBSD will detect the "pure LED", but as
>> you mentioned that it is labelled "wireless", it is in
>> relation to the WLAN inside the laptop. Maybe there's a
>> device driver functionality that activates the LED when
>> the WLAN device is active?
> Might be - but I don't have windows so I have no way of testing
>> Do you use the laptop's WLAN, and does the LED correspond
>> to any state (like activated, connected, scanning etc.) of
>> the WLAN?
> I do use WLAN but it does not correspond to any specific state. Nor does the
> physical switch change anything
>> Anyway, I would predict that you won't find an easy way
>> to utilize this LED except you're writing a driver for it
>> with specifications the laptop's manufacturer will sell to
>> you if you put enough money onto the table. :-)
>  It happens to be a Lenovo laptop. If I could get a copy of the
> specification it would make a nice project for me - writing a driver -
> *wonders*
>> Otherwise, it's completely useless.
>> --
>> Polytropon
>> Magdeburg, Germany
>> Happy FreeBSD user since 4.0
>> Andra moi ennepe, Mousa, ...
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If it's and Intel card (iwi(4), ipw(4), iwn(4)), it's a matter of
knowing what command to send to the firmware.

What device do you have in the laptop?

Check the dmesg(8) output...


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