From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxim Levitsky Subject: Re: 2.6.30-rc1 (latest git): thinkpad-acpi: cannot control brightness with hotkeys (BISECTED) Date: Wed, 15 Apr 2009 03:41:28 +0300 Message-ID: <1239756088.8954.5.camel@maxim-laptop> References: <49E10684.5090101@gmail.com> <20090411150555.8b13ed18.akpm@linux-foundation.org> <20090412161448.GC26502@khazad-dum.debian.net> <49E234ED.5010105@gmail.com> <1239585695.5564.5.camel@localhost.localdomain> <49E3575A.60204@gmail.com> <20090413203450.GC16152@khazad-dum.debian.net> <49E5234E.5070303@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <49E5234E.5070303@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Niel Lambrechts Cc: Henrique de Moraes Holschuh , mjg59@srcf.ucam.org, yakui_zhao , Andrew Morton , "linux.kernel" , "linux-acpi@vger.kernel.org" List-Id: linux-acpi@vger.kernel.org On Wed, 2009-04-15 at 01:59 +0200, Niel Lambrechts wrote: > On 04/13/2009 10:34 PM, Henrique de Moraes Holschuh wrote: > > On Mon, 13 Apr 2009, Niel Lambrechts wrote: > > > >>>> In 2.6.29.1: > >>>> lrwxrwxrwx 1 root root 0 Apr 12 20:01 /sys/class/backlight/acpi_video0 > >>>> -> ../../devices/virtual/backlight/acpi_video0 > >>>> > > > > Well, that at least confirms that thinkpad-acpi doesn't have anything to > > do with your troubles, you were using acpi video. > > > > Okay, I've bisected it to: > > 74a365b3f354fafc537efa5867deb7a9fadbfe27 is first bad commit > commit 74a365b3f354fafc537efa5867deb7a9fadbfe27 > Author: Matthew Garrett > Date: Thu Mar 19 21:35:39 2009 +0000 > > ACPI: Populate DIDL before registering ACPI video device on Intel > > --- > > Matthew, can you help? > > Regards, > Niel Just to note, I have nvidia, and yet have the same bug. I reverted this commit - didn't help. I get lots of ACPI: Failed to switch the brightnes when I press hardware keys that change brightness (even these sometimes don't work) the /sys/class/backlight is empty 2.6.29 works fine. Best regards, Maxim Levitsky