From: David Miller <davem@davemloft.net>
To: romosan@sycorax.lbl.gov
Cc: rpurdie@rpsys.net, akpm@linux-foundation.org,
linux-fbdev-devel@lists.sourceforge.net,
linux-kernel@vger.kernel.org, hmh@hmh.eng.br
Subject: Re: 2.6.21-rc2 radeon backlight
Date: Fri, 02 Mar 2007 13:40:05 -0800 (PST) [thread overview]
Message-ID: <20070302.134005.55727374.davem@davemloft.net> (raw)
In-Reply-To: <87mz2v5oj0.fsf@sycorax.lbl.gov>
From: Alex Romosan <romosan@sycorax.lbl.gov>
Date: Fri, 02 Mar 2007 13:22:27 -0800
> if i don't enable the radeon backlight support the backlight works and
> i can turn it on and off using radeontool. if i enable the radeon
> backlight support the screen stays dark (although i can log on my
> laptop remotely). if i try to use radeontool to turn the backlight on
> nothing happens. so, at least on the thinkpad, the radeon backlight
> support disables some other kind of backlight support that works
> otherwise.
Right, that's the crux of the problem.
The Radeon backlight support conflicts somehow with the
way the ACPI code programs the same hardware, and until
we figure out exactly what's going on, this is a regression.
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next prev parent reply other threads:[~2007-03-02 21:40 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <87ps7uutsk.fsf@sycorax.lbl.gov>
2007-03-02 2:45 ` 2.6.21-rc2 radeon backlight Andrew Morton
2007-03-02 17:24 ` Alex Romosan
2007-03-02 20:29 ` Andrew Morton
2007-03-02 20:35 ` David Miller
2007-03-02 21:01 ` Henrique de Moraes Holschuh
2007-03-02 21:22 ` Alex Romosan
2007-03-02 21:40 ` David Miller [this message]
2007-03-02 21:41 ` James Simmons
2007-03-02 21:58 ` Andrew Morton
2007-03-02 23:40 ` [Linux-fbdev-devel] " Richard Purdie
2007-03-03 16:23 ` James Simmons
2007-03-02 23:32 ` Richard Purdie
2007-03-03 5:34 ` Alex Romosan
2007-03-03 16:06 ` James Simmons
2007-03-03 16:35 ` Richard Purdie
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