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Date:   Fri, 4 Aug 2017 10:55:05 +0200
From:   Harvey <>
To:     Michał Kępień <>
Cc:     Jonathan Woithe <>,,
Subject: Re: Kernel error messages: leds fujitsu::radio_led: Setting an LED's
 brightness failed

Hi Michał,

> Thank you for providing us with further information.

Again, glad to help where I can.

>> Pressing the E button brings up some kind of Energy saving applet and
>> pressing the I button brings up an applet telling me about the hardware
>> in my laptop and its current state.
> These hotkeys should already work fine under Linux

Yes, they do. I already redefined them as shortcuts to start some useful

> If I did not miss anything in your reports, there are two issues that
> require some work:
>   - Fixing radio LED detection.  I have an idea how to do this, but
>     please mind that I am quite busy lately and cannot guarantee any
>     specific time frame for submitting a patch.
>   - Investigating the E LED.  This requires taking a look at the DSDT
>     dump from your laptop and searching for clues as to how this LED is
>     handled.  I will be happy to do that, but again, no promises about
>     how much time it will take.  (And given the nature of this task, I
>     cannot promise I will find anything reasonable at all.  I also might
>     ask you to do some further experiments as I do not have an E751
>     myself.)

Don't forget to take a look at the I LED... And concerning time. it is
ready when it's ready ;)

I will be happy to help and test anything that is required. Just send me
a note what needs to be done.


I am root. If you see me laughing, you'd better have a backup!

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