From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751495Ab1IXPUg (ORCPT ); Sat, 24 Sep 2011 11:20:36 -0400 Received: from nm33-vm3.bullet.mail.ne1.yahoo.com ([98.138.229.67]:21762 "HELO nm33-vm3.bullet.mail.ne1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751091Ab1IXPUf convert rfc822-to-8bit (ORCPT ); Sat, 24 Sep 2011 11:20:35 -0400 X-Greylist: delayed 412 seconds by postgrey-1.27 at vger.kernel.org; Sat, 24 Sep 2011 11:20:35 EDT X-Yahoo-Newman-Property: ymail-3 X-Yahoo-Newman-Id: 869408.92418.bm@omp1058.mail.ne1.yahoo.com DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.com; h=X-YMail-OSG:Received:X-Mailer:References:Message-ID:Date:From:Reply-To:Subject:To:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding; b=xHs54L/KkwqDGazDRFqx68JfLxBQKOG0GbHZZrjR0pOfSfGwlZS4jZQuPLJhP4YOoAPLB70QpLToY5giCfLi53dwjMSvPtTMwA3n+96PpzDPQsipS5dMsbQD8xUbxeUf/bKAauNtRiWbAtSZqoNZ2yQxFyTC6dcWXLKHp9DDXqE=; X-YMail-OSG: 1.ghdpcVM1ktS0OBV86HWARje9bcUL.t4PUHlEcILow4iyM PXeOvcgRaMpu69Ol8p786K1IATh8VIqLaCiRa8pOvNZ2Chra_Koj6D2ESX3a BUM8y9aywcXxziJoDjp1WV_T4.uioCOQjX2d1pYs9c3G4WOEfaTGzlYZf2Re KpIBu7WyLnVEJ7Txpjn5lCEdV9iSX9Ky7fISYypUx2sT74nzSFDo_FF5C5at .GsqDifnwOSWhCTH7v7nx3Xfg_59zpK3BlH736WjTTltt3P4.XVel8WZn_fh RsRJZhtZN4NdNncDl7Ay9id7Y9DTLkx3X8msYPaHqQn2XMvAyiN6FHPv.sje IZ8gWSCQkzozsiYyQX7BC_KgtrLPUSvmLiJZ4jwcAyygGbG0oGTkUDad7t5B fu1Vq8Vvv9PkeYfM2bHTGj96p3yFjFpRK3EPWW3LMuL0Jx1J42mgyj_6Kr9v bBmbX0uxOv9trMSVWK3vVlK_SQa.nl0g3O5amhlbW.kj.Zx5feR3T893Aerc .mRHWIk9EfJxKXcjG4UcnB45q4_ljgybz5cyOnE4D8E4oHD4O X-Mailer: YahooMailWebService/0.8.114.317681 References: <1316478488.72684.YahooMailNeo@web130114.mail.mud.yahoo.com> <1316868946.61433.YahooMailNeo@web130123.mail.mud.yahoo.com> Message-ID: <1316877222.89367.YahooMailNeo@web130124.mail.mud.yahoo.com> Date: Sat, 24 Sep 2011 08:13:42 -0700 (PDT) From: Alex Davis Reply-To: Alex Davis Subject: Re: [Regression] Laptop screen dark when lid closed and reopened.with 3.1 To: Keith Packard , "linux-kernel@vger.kernel.org" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Keith Packard To: Alex Davis ; "linux-kernel@vger.kernel.org" Cc: Sent: Saturday, September 24, 2011 10:48 AM Subject: Re: [Regression] Laptop screen dark when lid closed and reopened.with 3.1 >If you can, please send along a kernel log with drm.debug=5 and the >output of intel_reg_dumper run when the screen is working and when it is >black -- you'll need to use ssh from another computer to capture the >latter. > >intel_reg_dumper can be found at: > >        git://anongit.freedesktop.org/git/xorg/app/intel-gpu-tools > >I suspect you're hitting some of the backlight changes. Hard to believe >that something as simple as a light could be so complicated... Thanks for the info, will do this early next week. One good thing about the 3.1 kernels is that I now have the /sys/class/backlight/intel_backlight directory in addition to /sys/class/backlight/dell_backlight. With intel_backlight, I can control the LCD brightness; dell_backlight never worked, neither in 3.0 or 3.1.