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From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
Cc: Aaron Lu <aaron.lu@intel.com>,
	"Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
	Len Brown <lenb@kernel.org>
Subject: Re: linux-next 20160512 - ACPI issue with screen brightness
Date: Tue, 17 May 2016 22:50:11 +0200	[thread overview]
Message-ID: <CAJZ5v0jrFoQxLY_ZQrP-HP888swZbvSJPM=xNopC5MgQgnSxNg@mail.gmail.com> (raw)
In-Reply-To: <4736.1463510462@turing-police.cc.vt.edu>

On Tue, May 17, 2016 at 8:41 PM, Valdis Kletnieks
<Valdis.Kletnieks@vt.edu> wrote:
> next-20160512 sets the screen brightness to about 40%-ish or so, rather
> than the 100% intensity I want.
>
> Dell Latitude E6530 laptop.
>
> git bisect tells me:
>
> 059500940defe285222d3b189b366dfe7f299cae is the first bad commit
> commit 059500940defe285222d3b189b366dfe7f299cae
> Author: Aaron Lu <aaron.lu@intel.com>
> Date:   Wed Apr 27 20:45:04 2016 +0800
>
>     ACPI/video: export acpi_video_get_levels
>
>     The acpi_video_get_levels is useful for other drivers, i.e. the
>     to-be-added int3406 thermal driver, so export it.
>
>     Signed-off-by: Aaron Lu <aaron.lu@intel.com>
>     Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
>
> :040000 040000 24f4f5abe8beda2fa219dee7549faacc2f63e29f dfbe3a3bb4f58d82d5be768263d91172276fed98 M      drivers
> :040000 040000 603ffbf36e76717fe4f4ecb0418c9dbc59c76e25 a559bcd81c949a6471ffd045866df9b4e3fa4406 M      include
>
>
> but I've stared at the code and don't see what would do this....

Please try to check out the acpi-video branch from linux-pm.git and
see if the problem is present then.  If it is, please revert all of
the top-most commits up to and including the above one and see if the
problem goes away.

  reply	other threads:[~2016-05-17 20:50 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-05-17 18:41 linux-next 20160512 - ACPI issue with screen brightness Valdis Kletnieks
2016-05-17 20:50 ` Rafael J. Wysocki [this message]
2016-05-19 22:53   ` Valdis.Kletnieks
2016-05-20  3:05     ` Valdis.Kletnieks
2016-05-20  3:05       ` Valdis.Kletnieks
2016-05-20  5:45       ` Aaron Lu
2016-05-20  7:02         ` Valdis.Kletnieks
2016-05-20  7:17           ` Aaron Lu
2016-05-20  7:35             ` Aaron Lu
2016-05-21  0:15             ` Valdis.Kletnieks
2016-05-21  3:29               ` Aaron Lu
2016-05-21  7:55                 ` [PATCH] ACPI / Thermal / video: fix max_level incorrect value Aaron Lu
2016-05-25  5:15                   ` Aaron Lu
2016-05-26  1:49                     ` Valdis.Kletnieks
2016-05-26  5:15                       ` Aaron Lu
2016-05-27  0:42                         ` Zhang, Rui

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