From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jan-Marek Glogowski Subject: Re: Brightness and "touchpad dis-/enable" keys not working for Fujitsu e7x6 Date: Wed, 22 Jun 2016 12:18:44 +0200 Message-ID: <576A6604.8010907@fbihome.de> References: <575FC4E0.7080501@fbihome.de> <20160616234630.GB4764@marvin.atrad.com.au> <5763C0DF.3030302@fbihome.de> <20160621081229.GE19735@marvin.atrad.com.au> <20160622073213.GD3056@eudyptula.hq.kempniu.pl> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from ironchief.h-da.de ([141.100.10.235]:6905 "EHLO ironchief.h-da.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751742AbcFVKSr (ORCPT ); Wed, 22 Jun 2016 06:18:47 -0400 In-Reply-To: <20160622073213.GD3056@eudyptula.hq.kempniu.pl> Sender: platform-driver-x86-owner@vger.kernel.org List-ID: To: =?UTF-8?B?TWljaGHFgiBLxJlwaWXFhA==?= , Jonathan Woithe Cc: platform-driver-x86@vger.kernel.org Am 22.06.2016 um 09:32 schrieb Micha=C5=82 K=C4=99pie=C5=84: >>> A backlight device is available via /sys/class/backlight/intel_back= light >>> and you can change brightness manually. AFAIK this device is provid= ed by >>> the i915 driver. >> >> So perhaps the intent on other systems is to respond to the ACPI but= ton >> notifications by manipulating the intel backlight hardware. If this= is the >> case we'd need a way to do this from within the fujitsu-laptop drive= r in >> response to the buttons you've identified. >=20 > Is implementing this in the kernel really worth the effort? I ended = up > using xbacklight bound (in my window manager) to the brightness hotke= ys > for both my Lifebook E744 and my Vostro V131, which has a royally bor= ked > ACPI backlight control implementation. It seems using userspace help= ers > for backlight control is the new normal [1]. Yes, you lose console > brightness control; I can live with that, YMMV. >=20 > [1] https://www.spinics.net/lists/platform-driver-x86/msg07902.html The e7x6's DSTD misses the ACPI brightness control device (FUJ02B1), so the brightness part of the fujitsu-laptop driver isn't used and therefore - in addition to the direct brightness adjustment - generates no keycodes for the keys. A userspace keycode handling solution would be totally sufficient. Woul= d be nice, if it worked in kernel but that's clearly optional for me. Regards, Jan-Marek