From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Hans de Goede <hdegoede@redhat.com>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>, linux-acpi@vger.kernel.org
Subject: Re: [PATCH] acpi-video: Add disable_native_backlight quirk for Dell XPS15 L521X
Date: Mon, 12 Jan 2015 02:44:11 +0000 [thread overview]
Message-ID: <20150112024411.GA6831@srcf.ucam.org> (raw)
In-Reply-To: <54B25280.6010604@redhat.com>
On Sun, Jan 11, 2015 at 11:37:52AM +0100, Hans de Goede wrote:
> Userspace is writing to the intel_backlight device because it is the
> only one present under /sys/class/backlight, as we disable acpi-video
> on win8 ready laptops by default now.
Why is nouveau not providing a backlight device?
> The commit message may not be 100% accurate, although I believe this is
> related to the laptop having nvidia graphics, but the code / fix is correct
> regardless.
I don't think we have enough evidence to know whether this fix is
correct.
--
Matthew Garrett | mjg59@srcf.ucam.org
next prev parent reply other threads:[~2015-01-12 2:44 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-05 7:57 [PATCH] acpi-video: Add disable_native_backlight quirk for Dell XPS15 L521X Hans de Goede
2015-01-05 23:35 ` Rafael J. Wysocki
2015-01-11 6:16 ` Matthew Garrett
2015-01-11 10:37 ` Hans de Goede
2015-01-12 2:44 ` Matthew Garrett [this message]
2015-01-12 9:12 ` Hans de Goede
2015-01-12 10:21 ` Matthew Garrett
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