linux-kernel - Re: [PATCH] Added backlight driver for Acer Aspire 4736

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Message-ID: <20120313133458.GA11574@srcf.ucam.org>
Date:	Tue, 13 Mar 2012 13:34:59 +0000
From:	Matthew Garrett <mjg@...hat.com>
To:	Pradeep Subrahmanion <subrahmanion.pradeep@...il.com>
Cc:	rpurdie@...ys.net, FlorianSchandinat@....de,
	akpm@...ux-foundation.org, linux-fbdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Added backlight driver for Acer Aspire 4736

On Tue, Mar 13, 2012 at 06:56:16PM +0530, Pradeep Subrahmanion wrote:
> I tried giving acpi_backlight = vendor . In that case hot key for
> brightness control is working. But i think  , it is not calculating the
> correct value for brightness because increasing brightness after maximum
> level gives blank screen .

Which backlight device appears then?

> By ' ACPI interface' , I mean 'acpi_video0' inside the
> /sys/class/backlight. I havn't tried the /sys/class/backlight interface
> directly . I will try that also.

So writing values into /sys/class/backlight/acpi_video0/brightness does 
nothing?

-- 
Matthew Garrett | mjg59@...f.ucam.org
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