From: Zhang Rui <rui.zhang@intel.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>,
"linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>
Subject: Re: ACPI error messages
Date: Mon, 07 Jun 2010 09:12:20 +0800 [thread overview]
Message-ID: <1275873140.19052.9516.camel@rzhang1-desktop> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1006041050300.1794-100000@iolanthe.rowland.org>
On Fri, 2010-06-04 at 22:52 +0800, Alan Stern wrote:
> On Fri, 4 Jun 2010, Zhang Rui wrote:
>
> > I've heard that win7 prefers the ACPI wmi driver instead of ACPI video
> > driver for backlight control. But not sure if win7 prefers the platform
> > driver as well.
> >
> > Alan,
> > can you help me verify if the backlight control works well when you boot
> > w/ acpi_backlight=vendor and w/o acpi_osi="!Windwos 2009"?
>
> I don't have the laptop with me here, so this will have to wait a
> little.
>
okay.
> Also, I've never used the backlight control and I don't know how it
> works. What should I do in order to test it?
>
You can change the backlight by poking /sys/class/backlight/*/brightness
thanks,
rui
next prev parent reply other threads:[~2010-06-07 1:11 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.44L0.1006012126370.32192-300000@netrider.rowland.org>
2010-06-02 2:13 ` ACPI error messages Zhang Rui
2010-06-02 15:10 ` Alan Stern
2010-06-03 1:10 ` Zhang Rui
2010-06-03 1:52 ` Alan Stern
2010-06-03 14:16 ` Matthew Garrett
2010-06-04 1:03 ` Zhang Rui
2010-06-04 14:52 ` Alan Stern
2010-06-07 1:12 ` Zhang Rui [this message]
2010-06-08 18:42 ` Alan Stern
2010-06-01 13:11 Alan Stern
2010-06-02 0:59 ` Zhang Rui
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