From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benoit Gschwind Subject: Re: apple_gmux bug Date: Thu, 24 Jan 2013 09:16:15 +0100 Message-ID: <5100EDCF.1040208@gnu-log.net> References: <5100ED34.4040400@gnu-log.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from relay3-d.mail.gandi.net ([217.70.183.195]:38303 "EHLO relay3-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751777Ab3AXIQT convert rfc822-to-8bit (ORCPT ); Thu, 24 Jan 2013 03:16:19 -0500 In-Reply-To: <5100ED34.4040400@gnu-log.net> Sender: platform-driver-x86-owner@vger.kernel.org List-ID: To: Rolando Martins Cc: platform-driver-x86@vger.kernel.org, Seth Forshee Hello Rolando, I found that if you turn you computer in stanby (suspend to RAM) and=20 turn it on again, gmux work again. I didn't found a way ot enable this behaviour at boot. Best regards Le 24/01/2013 09:13, Benoit Gschwind a =E9crit : > Hello Rolando, > > Do you use NVIDIA proprietary driver ? > > If this is the case, this explain your issue probably. NVIDIA driver > seems disable gmux chips. > > Best regards. > > Le 24/01/2013 06:25, Rolando Martins wrote : >> Hi, >> I am currently experienced problems with the apple_gmux driver >> while using a MBP retina 10,1. >> System description & behavior: >> -Ubuntu 13.04 with kernel 3.8-rc4. >> -dmesg: apple_gmux: Found gmux version 3.2.19 [indexed] >> -Under /sys/class/backlight I only have gmux_backlight. >> -Under gmux_backlight both actual and max brightness are equal to 2^= 24 >> =3D 16777216, >> while brightness value is within [0,1023] (the value can be changed) >> -The backlight is dimmed throughout the boot process and remains the >> same, >> without being possible to adjust it. >> >> If the following hack is applied then full brightness can be achieve= d, >> however it remains nonadjustable. >> >> #define HACK_VALUE 1023 >> ... >> In gmux_probe() : >> ... >> props.max_brightness =3D gmux_read32(gmux_data, >> GMUX_PORT_MAX_BRIGHTNESS); >> //hack >> props.max_brightness =3D HACK_VALUE; >> .... >> bdev->props.brightness =3D gmux_get_brightness(bdev); >> //hack >> bdev->props.brightness =3D HACK_VALUE; >> >> Does anybody have a clue to solve this problem? >> >> Thanks for the help, >> Rolando >> -- >> To unsubscribe from this list: send the line "unsubscribe >> platform-driver-x86" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > > -- > To unsubscribe from this list: send the line "unsubscribe > platform-driver-x86" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html