From mboxrd@z Thu Jan 1 00:00:00 1970 From: Niel Lambrechts Subject: Re: 2.6.30-rc1 (latest git): thinkpad-acpi: cannot control brightness with hotkeys (BISECTED) Date: Wed, 15 Apr 2009 07:51:41 +0200 Message-ID: <49E575ED.8010306@gmail.com> 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> <1239756088.8954.5.camel@maxim-laptop> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1239756088.8954.5.camel@maxim-laptop> Sender: linux-kernel-owner@vger.kernel.org To: Maxim Levitsky 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 04/15/2009 02:41 AM, Maxim Levitsky wrote: > 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. > While you may have _some_ of the same symptoms, you clearly don't have the same bug. I reverted the commit as well, and my laptop is working fine under 2.6.30-rc2 now. > I get lots of > ACPI: Failed to switch the brightnes > when I press hardware keys that change brightness > (even these sometimes don't work) > Mine consistently did not work, and I had no messages. I understand you could try to do a limited bisect using something like git bisect start -- drivers/acpi drivers/video Perhaps you can do a bisect as well? Regards, Niel