From owner-freebsd-acpi@FreeBSD.ORG Sun May 27 19:14:33 2012 Return-Path: <owner-freebsd-acpi@FreeBSD.ORG> Delivered-To: freebsd-acpi@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 321151065673 for <freebsd-acpi@freebsd.org>; Sun, 27 May 2012 19:14:33 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: from mail-wi0-f172.google.com (mail-wi0-f172.google.com [209.85.212.172]) by mx1.freebsd.org (Postfix) with ESMTP id B50D98FC2B for <freebsd-acpi@freebsd.org>; Sun, 27 May 2012 19:14:32 +0000 (UTC) Received: by wibhj8 with SMTP id hj8so847428wib.13 for <freebsd-acpi@freebsd.org>; Sun, 27 May 2012 12:14:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; bh=EW65DaRmVNNw5Wfo10APmhxh7Nd1Th4McfH+HfmcmPs=; b=Dk/1u2wTKcG5FNXSKiBIvH3Qi+o0VFwCgQV2ldoSDRdvzu8Gy8xJCZR64y6rFm8OtW obL7HgoaGMw0T3iERuZPAA8lhFI87rkQ0F3A9mFrGBZAq2FCYPOShptuT3SErEkYzG0k mLN3FmoW6VmTJJkahzOkEqAA5wmco2aAXX3Kfn4QOm5146iNUnG2LExdTmAQQoScRroK Z0IS4/RSXprqI7BJL6cc0K4qeApi6MrRhSXS2G6QeBU+MvMgvRUfQxld58dk4jSTuDRQ whqBopsjFDt+KyrLbPqVgIHY6etda0V6YYEUf7gHOsKaaLGv7x64BcVDI8914tz3g8Na 0HBA== MIME-Version: 1.0 Received: by 10.216.215.194 with SMTP id e44mr3227627wep.61.1338146071396; Sun, 27 May 2012 12:14:31 -0700 (PDT) Received: by 10.223.155.4 with HTTP; Sun, 27 May 2012 12:14:31 -0700 (PDT) In-Reply-To: <20120526124542.GK39168@e-new.0x20.net> References: <20120523151357.GC97037@sigil.instinctive.eu> <CAN6yY1vbc5DJcc4GrktyJaokA6CPNgTdx5X+HH7J1W_NvLJPxA@mail.gmail.com> <20120524065532.GB39168@e-new.0x20.net> <CAN6yY1u6DzSyGBCRB4zbstDP7ES7p4SjuyXkFQU5KkE264W6xw@mail.gmail.com> <20120526124542.GK39168@e-new.0x20.net> Date: Sun, 27 May 2012 12:14:31 -0700 Message-ID: <CAN6yY1tZdNxm+__Orx+kvAkd53yS+sg_LD6SFazqiQKxKhDoyg@mail.gmail.com> From: Kevin Oberman <kob6558@gmail.com> To: Lars Engels <lars.engels@0x20.net> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-acpi@freebsd.org, =?ISO-8859-1?Q?Natacha_Port=E9?= <natbsd@instinctive.eu> Subject: Re: How can I help with thinkpad x220 issues? X-BeenThere: freebsd-acpi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: ACPI and power management development <freebsd-acpi.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-acpi>, <mailto:freebsd-acpi-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-acpi> List-Post: <mailto:freebsd-acpi@freebsd.org> List-Help: <mailto:freebsd-acpi-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-acpi>, <mailto:freebsd-acpi-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sun, 27 May 2012 19:14:33 -0000 On Sat, May 26, 2012 at 5:45 AM, Lars Engels <lars.engels@0x20.net> wrote: > On Fri, May 25, 2012 at 08:25:47PM -0700, Kevin Oberman wrote: >> On Wed, May 23, 2012 at 11:55 PM, Lars Engels <lars.engels@0x20.net> wro= te: >> > On Wed, May 23, 2012 at 03:19:14PM -0700, Kevin Oberman wrote: >> >> On Wed, May 23, 2012 at 8:13 AM, Natacha Port=E9 <natbsd@instinctive.= eu> wrote: >> >> > Hello, >> >> > >> >> > I happen to be the owner of a brand new Lenovo Thinkpad X220. From = a >> >> > recent thread here I gather it almost works with FreeBSD, and the >> >> > remaining problems are screen brightness and screen left unpowered = at >> >> > resume. Is that right? >> >> > >> >> > So my question is, how can I help make progress in any of these are= a? >> >> > (though I admit I'm more interested in having the brightness proble= m >> >> > solved than the resume one) >> >> > >> >> > I don't know anything about ACPI or about FreeBSD or Linux internal= s, >> >> > but I'm quite proficient in C and somewhat used to navigate in unkn= own >> >> > huge code bases. >> >> > >> >> > So I guess the first steps to help would be to first learn stuff. >> >> > >> >> > However I don't have much time available. I guess FreeBSD 11 would = reach >> >> > end-of-life before I could reach a level of understanding I find >> >> > satisfying (though I admit I have high standards there), so I would= have >> >> > to prioritize. So my question is rather *what* should I learn to pr= ovide >> >> > help as soon as possible? >> >> > >> >> > For example, if the brightness issue is just a matter of extracting= the >> >> > right numbers from linux kernel code and plug them into FreeBSD, I >> >> > probably won't need to learn anything more about ACPI than what I w= ould >> >> > gather looking at the code. I guess if it was that simple someone w= ould >> >> > have already done it, but that illustrate well my point about >> >> > prioritizing learning. >> >> > >> >> > Or is the barrier of entry too high for me to be of any use? >> >> >> >> If it has not been committed, the minor fix to make acpi_ibm work on >> >> modern ThinkPads needs to be committed. Once done, the issues >> >> mentioned need to be addressed.This includes getting brightness to be >> >> setable from both the keypad hot-keys and from applications. ATM, I >> >> can set the brightness, but making the hot-keys work will require the >> >> ability to extract the current level so that it may be adjusted >> >> plus/minus one. >> >> >> >> The other issue is volume control keys don't work. I suspect it will >> >> be similar to brightness, but I don't know just how to figure it out. >> >> >> >> I should also mention that I don't have an X220. I have a T520, but >> >> the issues seem to be identical, so fixing one will probably fix a lo= t >> >> of recent ThinkPads. >> > >> > About the key: >> > >> > Did you try loading "acpi_ibm", "sysctl dev.acpi_ibm.0.events=3D1", >> > "cat /var/run/devd.pipe" and then press the keys. Does anything show u= p? >> >> After adding LEN0068 ti the ACPI IDs, I tried this and I get no ACPI >> event when pressing either button, but I do get regular key press >> events: >> KeyPress event, serial 30, synthetic NO, window 0x4600001, >> =A0 =A0 root 0x121, subw 0x0, time 166670035, (96,121), root:(100,750), >> =A0 =A0 state 0x0, keycode 176 (keysym 0x1008ff13, XF86AudioRaiseVolume)= , >> same_screen YES, >> =A0 =A0 XLookupString gives 0 bytes: >> =A0 =A0 XmbLookupString gives 0 bytes: >> =A0 =A0 XFilterEvent returns: False >> >> KeyRelease event, serial 33, synthetic NO, window 0x4600001, >> =A0 =A0 root 0x121, subw 0x0, time 166670185, (96,121), root:(100,750), >> =A0 =A0 state 0x0, keycode 176 (keysym 0x1008ff13, XF86AudioRaiseVolume)= , >> same_screen YES, >> =A0 =A0 XLookupString gives 0 bytes: >> =A0 =A0 XFilterEvent returns: False >> >> KeyPress event, serial 33, synthetic NO, window 0x4600001, >> =A0 =A0 root 0x121, subw 0x0, time 166927339, (98,0), root:(102,629), >> =A0 =A0 state 0x0, keycode 174 (keysym 0x1008ff11, XF86AudioLowerVolume)= , >> same_screen YES, >> =A0 =A0 XLookupString gives 0 bytes: >> =A0 =A0 XmbLookupString gives 0 bytes: >> =A0 =A0 XFilterEvent returns: False >> >> KeyRelease event, serial 33, synthetic NO, window 0x4600001, >> =A0 =A0 root 0x121, subw 0x0, time 166927451, (98,0), root:(102,629), >> =A0 =A0 state 0x0, keycode 174 (keysym 0x1008ff11, XF86AudioLowerVolume)= , >> same_screen YES, >> =A0 =A0 XLookupString gives 0 bytes: >> =A0 =A0 XFilterEvent returns: False > > Hmm, okay, that's not too bad. At least the keys are recognized. > > >> >> I can set these up as hot keys and issue a command, but I have no idea >> what I can set to adjust the hardware volume. But I will also need to >> read out the current volume so I know what value to which is should be >> set. (Same issue as with brightness.) > > Do you have dev.acpi_ibm.0.lcd_brightness and .volume? > > If you cou can write a script that raises / lowers the values with > sysctl. Unfortunately newer Lenovo systems no longer play correctly with the acpi_ibm module. Some things do work, but brightness, volume, and fan speed control don't use the same ACPI methods as older units. Brightness now uses /VBRC instead of /_BCL and can be accessed via the call_acpi port do do raw ACPI operations. See http://lists.freebsd.org/pipermail/freebsd-current/2012-March/032511.ht= ml Of course, you need to add LEN0068 to the list of IDs to get acpi_ibm to work at all. Guess I need to open a PR to get this "fix" added, but the proper one would be to fork off acpi_lenovo to use the ACPI methods now used by ThinkPads. (I wonder if the ID is the only things needed to detect the switch?) --=20 R. Kevin Oberman, Network Engineer E-mail: kob6558@gmail.com