From: Hans de Goede <hdegoede@redhat.com>
To: Aaron Lu <aaron.lu@intel.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>,
Ben Skeggs <bskeggs@redhat.com>,
platform-driver-x86@vger.kernel.org,
dri-devel@lists.freedesktop.org,
Sylvain Pasche <sylvain.pasche@gmail.com>,
linux-acpi@vger.kernel.org
Subject: Re: [PATCH v2] acpi-video: Add a parameter to not register the backlight sysfs interface
Date: Tue, 09 Jun 2015 23:54:45 +0200 [thread overview]
Message-ID: <557760A5.9000404@redhat.com> (raw)
In-Reply-To: <20150609091042.GA1280@aaronlu.sh.intel.com>
Hi,
On 06/09/2015 11:10 AM, Aaron Lu wrote:
> On Tue, Jun 09, 2015 at 10:32:25AM +0200, Hans de Goede wrote:
>> On some systems acpi-video backlight is broken in the sense that it cannot
>> control the brightness of the backlight, but it must still be called on
>> resume to power-up the backlight after resume.
>
> All the video module does on resume is a backlight set operation, it
> can't control backlight but can turn on the screen on resume? Hmm...
>
> I'll ask Sylvain to attach acpidump, let's see if there is anything
> special there.
Ok, lets see what comes out of that. Note in the mean time Sylvain has
attached his acpidump.
Regards,
Hans
next prev parent reply other threads:[~2015-06-09 21:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-09 8:32 [PATCH v2] acpi-video: Add a parameter to not register the backlight sysfs interface Hans de Goede
2015-06-09 9:10 ` Aaron Lu
2015-06-09 21:54 ` Hans de Goede [this message]
2015-06-11 1:43 ` Aaron Lu
2015-06-11 10:13 ` Hans de Goede
2015-06-11 11:10 ` Jani Nikula
2015-06-11 12:13 ` Hans de Goede
2015-06-15 23:18 ` Rafael J. Wysocki
2015-06-09 14:03 ` Jani Nikula
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