From: Lukas Hejtmanek <xhejtman@ics.muni.cz>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: bugme-daemon@bugzilla.kernel.org,
Matthew Garrett <mjg59@srcf.ucam.org>,
Henrique de Moraes Holschuh <hmh@hmh.eng.br>,
linux-acpi@vger.kernel.org
Subject: Re: [Bugme-new] [Bug 9995] New: 2.6.25-rc1 regression - IBM ACPI backlight controlls do not work
Date: Fri, 15 Feb 2008 23:51:09 +0100 [thread overview]
Message-ID: <20080215225109.GE4269@ics.muni.cz> (raw)
In-Reply-To: <20080215122137.629c612d.akpm@linux-foundation.org>
On Fri, Feb 15, 2008 at 12:21:37PM -0800, Andrew Morton wrote:
> I've lost the plot on what's happening with backlight. I think you're
> about to find that this is not-a-bug, even though it stopped working.
Why do you think that it is not-a-bug even if it stopped working? I don't
think it is a feature as acpi video driver should control backlight levels on
laptop that provides generic ACPI based backlight support which is the case of
ThinkPad T61. Or at least it used to be with up to 2.6.24 kernels.
I can read sane values from /sys/class/backlight/acpi_video0/* but changing them
has no effect on the backlight.
--
Lukáš Hejtmánek
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next prev parent reply other threads:[~2008-02-15 22:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-9995-10286@http.bugzilla.kernel.org/>
2008-02-15 20:21 ` [Bugme-new] [Bug 9995] New: 2.6.25-rc1 regression - IBM ACPI backlight controlls do not work Andrew Morton
2008-02-15 22:51 ` Lukas Hejtmanek [this message]
2008-02-15 23:18 ` Matthew Garrett
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