From mboxrd@z Thu Jan 1 00:00:00 1970 From: Karol Babioch Subject: Re: no brightness with acpi video since 3.3 [was Re: Issues with the sony-platform module] Date: Sun, 17 Jun 2012 12:50:39 +0200 Message-ID: <4FDDB67F.7090704@babioch.de> References: <20120614203914.GA2645@kamineko.org> <4FDAE7FE.5030706@babioch.de> <20120615113637.GA5904@kamineko.org> <4FDB5202.706@babioch.de> <20120615223711.GA31180@kamineko.org> <4FDBC183.7050203@babioch.de> <20120616025223.GA5200@kamineko.org> <4FDC6D0A.8080505@babioch.de> <20120616130705.GB2326@kamineko.org> <4FDCCB79.9090305@babioch.de> <20120616231658.GC2326@kamineko.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig9D33B3866B7E23836F97E603" Return-path: Received: from babioch.de ([176.9.120.167]:37078 "EHLO babioch.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755023Ab2FQKuq (ORCPT ); Sun, 17 Jun 2012 06:50:46 -0400 In-Reply-To: <20120616231658.GC2326@kamineko.org> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Mattia Dongili Cc: platform-driver-x86@vger.kernel.org, ACPI Devel Mailing List This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig9D33B3866B7E23836F97E603 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Hi, Am 17.06.2012 01:16, schrieb Mattia Dongili: > I'm a bit lost at this point. Are you saying that you cannot get a > working backlight control with the old set-up you had? Yeah, I can't get it working. Tried nearly every kernel from 3.0 onwards. Don't know what is going on here :(. Any idea what could have caused this? > If so what else did you change in your set up? Well, I'm on Arch Linux, which is a rolling release distribution. So there is probably a lot of stuff, which has changed during the course of the last two to three months :(. > Also, any chance you could try to inspect/poke the acpi_video0 or > sony-laptop backlight directories without loading the nouveau driver? Yeah, sure. In both cases the brightness won't change. Here you have some excerpts in the case of "acpi_backlight=3Dvendor" again: [root@vpcs ~]# grep . /sys/class/backlight/sony/*/* /sys/class/backlight/sony/actual_brightness:-13 /sys/class/backlight/sony/bl_power:0 /sys/class/backlight/sony/brightness:-13 /sys/class/backlight/sony/max_brightness:242 /sys/class/backlight/sony/type:platform I then echoed 100 to /sys/class/backlight/sony/brightness and dmesg reported the following: [ 89.631235] sony_laptop: found handle 0x0137 (offset: 0x0b) [ 89.753455] sony_laptop: __call_snc_method: [SN07:0x000000000000020b] [ 89.753457] sony_laptop: called SN07 with 0x020b (result: 0x0000) Not sure what this means, but probably nouveau is not the culprit here. Best regards, Karol Babioch --------------enig9D33B3866B7E23836F97E603 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQIcBAEBAgAGBQJP3baCAAoJEHSaZc1HnzIVBUEP/RS+Y0RUBZ9sR4EAIcZvTIsZ jt9fAWSkgsbI12f/hp3jQAiLSMRlRQpf6krURVJal/e0dRAuLTHQmi36TKFsBI4m 4EX4RFRgPo0ptsVEoxF6bR47TqN1RA7xl+f9eitCJctOhSfH0GPLisYQ7D1bFufn dyD5FyjcN4DicmNiaMTf89f91HfCzAlIvjX+m0Xa+ziu6EP7SKnXEy+oEFPb+0tW e09XZNwzg6/tjIqu7Nja6mMFKoYGVj6ajjJnp3Gcx0Yx87DozIRqk9hF8SqBCb4Z 6I+b4qmuLKYVG7r9mPKrPg8apgm5FdwoWz8dYCs/8Oz05O1MUtmiEKNTFN2IrSP5 YSObYbruX/5A/+RVyimydR/2LnFNi0J90AQxHGwvchD3CxrB9DgIkEZSQJq5TPjd w6nGyEEM7+96JSX6BMFi2jWGImvE8NjEtkjDYnLV6EHWgm/E+9HFaw786o93fYdU Uy+3rk9Dm4lsN89vgsqbiVyxQkKxkz1l7+66vvr1VbnGlOWAypAhIBGiGRaqB5/s 32TFi0cYP1FZMbL0dB6sFTTGMg3xxF3JZVMAIOmH1eB3rrr8OjkTvL/NYiYb8VFV YqpF3U/j5ID+9jwWpsww5z/fY9PoUI3I/FouF1p5xuVj9xgnVHFkvstavE7dfJg/ j6aFC8kY5ANBBAlHweuW =uD1y -----END PGP SIGNATURE----- --------------enig9D33B3866B7E23836F97E603--