From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751920AbdJYNTD (ORCPT ); Wed, 25 Oct 2017 09:19:03 -0400 Received: from mout.gmx.net ([212.227.15.18]:58077 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751787AbdJYNS7 (ORCPT ); Wed, 25 Oct 2017 09:18:59 -0400 Reply-To: harv@gmx.de Subject: Re: Kernel error messages: leds fujitsu::radio_led: Setting an LED's brightness failed To: =?UTF-8?B?TWljaGHFgiBLxJlwaWXFhA==?= Cc: Jonathan Woithe , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org References: <20170720064257.GA4942@larwa.localdomain> <20170804061352.GA7838@kmp-mobile.hq.kempniu.pl> <20171025043957.GA13202@kmp-mobile.hq.kempniu.pl> From: Harvey Message-ID: <7af5f592-df89-fd9d-916c-2e7bf941cf1f@gmx.de> Date: Wed, 25 Oct 2017 15:17:56 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <20171025043957.GA13202@kmp-mobile.hq.kempniu.pl> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="f51w451WUfUTbOT0d3m5Oflq8U0iPT3UK" X-Provags-ID: V03:K0:jszyi4/CtNSKNdGeuuXrKRlChunbf6JjKbGuoASNAK6JkZfPrYi hqedKiwL858zZDbvPkHun7ob1vtx3DJY2Sf+jbC1OfSdlZwG+oNYgfWE20enceCoSUO3Da/ XkI0nyqKLpAzgnGaTgLwUrjPoo+MhlMM8BJekNMgwGqQ5i1NsBd5XqU7O+P9NALMEq0/NeJ wEEiW9+GJJgF1X+cdVdFw== X-UI-Out-Filterresults: notjunk:1;V01:K0:7g6dfL4Z/tY=:UzjLiqQiZQFP3n8Ea7enZ9 ybU2YXbT75f4TVZgAbvIoauNp87rFkN2uuRHs8/6AvcywdBS7OGj2ahJRPa2cdQranIPhhq3Q c95G+ctgKJMxfUOBVBm5Io3w3e+37BZ0wNA8/9bvMQ3JiCKhsMj216JkzyIDSUf3X6W1iEV0+ TtiZeNiA5QeD7OjFQ0xOky7a3byx2y4znwe3TVO8E1SsNeiysW77cp7H85P1HE8fh86s/v4Fb Kg+vzO5Lo13QxbjNwpDmX9zzP1RLbQBMGbiv07Q0Jrxy9CkmURV9ImgZqZm6aL9FCNN/LEqV+ 53Ah4yYobLpVPhC0fSlx+Isapq4S8Uhgl087NIso0KSk1d8JZRQL6caE85ULTbTx49HI4lP3t FkAxb/2C/wkD6iLpz6HcFL7qmK5Y/yAa0TiIApoNtDjS3Squ/6/Wt8TOEVS/ejLkviFbivyzH 0wTICCtUF7IkBAXsLVrFhnz8fTIWM8VXOVOPg0HAheGyQdTGCe7kxV9MeRZ44sTBF8NHlXfDG DRdyZV+NWDO0xp+n+rfgl14nITGLqm4sIHiu/B9mB9wcb8s1MjHOSS2SjmXGZLTmWyaLuLnlx 9jaZZbu8QthY6fnBRyeLzYXQJtTT7zySR8xdgWMZNEyC+hf/ZdMz8KCLyFDFy4i0sqoes4IOw Y773I8DTkxUtu2/k0jhr0CADDRqA2GTEriTCxiezTHfgo1RLWVoCs3RNFcFVpRx+ffxzZK8nk SmutW6McXXI/WN0WnOYRyyX5RVAgEFiJGZlPxWJnOGGHp/7qaTU15JRsz12gSvI1pHmHO1Izo foUDWkBqSvg+xbXb6Bf5rIWdFu9lA== Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --f51w451WUfUTbOT0d3m5Oflq8U0iPT3UK Content-Type: multipart/mixed; boundary="ax4tMrldwA6Ae6DEx5iDP36rUhx26NIJU"; protected-headers="v1" From: Harvey Reply-To: harv@gmx.de To: =?UTF-8?B?TWljaGHFgiBLxJlwaWXFhA==?= Cc: Jonathan Woithe , platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org Message-ID: <7af5f592-df89-fd9d-916c-2e7bf941cf1f@gmx.de> Subject: Re: Kernel error messages: leds fujitsu::radio_led: Setting an LED's brightness failed References: <20170720064257.GA4942@larwa.localdomain> <20170804061352.GA7838@kmp-mobile.hq.kempniu.pl> <20171025043957.GA13202@kmp-mobile.hq.kempniu.pl> In-Reply-To: <20171025043957.GA13202@kmp-mobile.hq.kempniu.pl> --ax4tMrldwA6Ae6DEx5iDP36rUhx26NIJU Content-Type: text/plain; charset=utf-8 Content-Language: de-DE Content-Transfer-Encoding: quoted-printable Am 25.10.2017 um 06:39 schrieb Micha=C5=82 K=C4=99pie=C5=84: >>> - 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 abou= t >>> 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 mi= ght >>> ask you to do some further experiments as I do not have an E751 >>> myself.) >=20 > I feel stupid for only suggesting this now, but can this simply be the > eco LED? The DSDT dump from your laptop suggests so, as well as the > description of the E LED in the manual. Have you tried playing around > with /sys/class/leds/fujitsu::eco_led? No, I haven't. I tried to set brightness to 255 and back to 0: [root@gruenix ~]# echo 255 >/sys/class/leds/fujitsu::eco_led/brightness =3D> eco LED lights up! [root@gruenix ~]# cat /sys/class/leds/fujitsu::eco_led/brightness =3D> eco LED off! Tadaaa! So yes, this is the eco LED of my E751. >> Don't forget to take a look at the I LED... >=20 > I could not find anything in the DSDT dump from your laptop that would > suggest this LED can be controlled using ACPI. >=20 Greetings Harvey --=20 I am root. If you see me laughing, you'd better have a backup! --ax4tMrldwA6Ae6DEx5iDP36rUhx26NIJU-- --f51w451WUfUTbOT0d3m5Oflq8U0iPT3UK Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQRSRNvmxYqoNs6vm0SLlqqYsFRKCQUCWfCPBAAKCRCLlqqYsFRK CYTuAJ0XiSBsoM7QD2cHGesZnBt0ApTqBACfXYRFInp3xi+MDxi/JllXOm7xb2o= =RzC/ -----END PGP SIGNATURE----- --f51w451WUfUTbOT0d3m5Oflq8U0iPT3UK--