From: Bertrik Sikken <bertrik@sikken.nl>
To: Jani Nikula <jani.nikula@intel.com>
Cc: "intel-gfx@lists.freedesktop.org" <intel-gfx@lists.freedesktop.org>
Subject: Re: [REGRESSION BISECTED] backlight control stops workin with 3.14 and later
Date: Sun, 17 Aug 2014 10:44:21 +0200 [thread overview]
Message-ID: <53F06B65.4090001@sikken.nl> (raw)
In-Reply-To: <878umpq36f.fsf@intel.com>
On 15-8-2014 3:43, Jani Nikula wrote:
> On Thu, 14 Aug 2014, Bertrik Sikken <bertrik@sikken.nl> wrote:
>> Attached is dmesg output from booting kernel 3.14-2 (debian unstable)
>> with drm.debug=0xe and the samsung_laptop module enabled, from my
>> Samsung N150plus netbook.
>
> Have you tried 3.15?
I've built the v3.15 kernel (using the .config file from debian
unstable and doing make oldconfig).
The backlight is at maximum brightness after boot and I can't control
it using the backlight buttons, nor by writing to
/sys/class/backlight/samsung/brightness
(say half the value or 1/10th of max_brightness)
Backlight does work when writing
/sys/class/backlight/intel_backlight/brightness
Kind regards,
Bertrik Sikken
next prev parent reply other threads:[~2014-08-17 8:44 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-22 6:42 [REGRESSION BISECTED] backlight control stops workin with 3.14 and later Hans de Goede
2014-07-22 6:52 ` Daniel Vetter
2014-07-22 6:59 ` Chris Wilson
2014-07-23 8:46 ` Hans de Goede
2014-07-23 13:15 ` Bertrik Sikken
2014-08-13 13:43 ` Jani Nikula
2014-08-14 19:45 ` Bertrik Sikken
2014-08-15 13:43 ` Jani Nikula
2014-08-17 8:44 ` Bertrik Sikken [this message]
2014-08-18 7:37 ` Jani Nikula
2014-08-19 9:52 ` Bertrik Sikken
2014-08-19 13:29 ` Jani Nikula
2014-08-21 21:44 ` Bertrik Sikken
2014-08-22 6:48 ` Jani Nikula
2014-08-22 10:52 ` Bertrik Sikken
2014-08-23 13:11 ` Hans de Goede
2014-08-25 7:29 ` Jani Nikula
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