From mboxrd@z Thu Jan  1 00:00:00 1970
From: joeyli <jlee@suse.com>
Subject: Re: Fwd: [Bugreport] Screen backllight issues on FirePro M5950 (HP
 EliteBook 8560w)
Date: Tue, 24 Jan 2012 08:58:40 +0800
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To: Artur Flinta <aflinta@gmail.com>
Cc: linux-acpi@vger.kernel.org, platform-driver-x86@vger.kernel.org

On Mon, 2012-01-23 at 15:45 +0100, Artur Flinta wrote:
> Hi!
> 
> On Mon, Jan 23, 2012 at 12:55 AM, joeyli <jlee@suse.com> wrote:
> > Yes! we still need fix the problem with backlight control. Please kindly
> > give me the result after add the following debug parameter:
> >        acpi.debug_level=0xF acpi.debug_layer=0xFFFFFFFF log_buf_len=5M
> >
> 
> I did it and log is in attachment.
> 

Thanks, but looks like your kernel didn't enable 
	CONFIG_ACPI_DEBUG=y

So, doesn't show up any acpi debug log in messages.

> > And,
> > Did you try the following kernel parameter?
> >        acpi_backlight=vendor
> 
> Sure, but after applying it, backlight control keys doesn't work
> anymore, there is also no any message in the log.
> 

Does it work set backlight level by sysfs?
	echo 9 > /sys/class/backlight/acpi_video0/brightness

> I've also checked command: watch -n 1 cat
> /sys/firmware/acpi/interrupts/gpe[012][0123456789ABCDEF]
> but nothing changed too.
> 
> Regards
> Artur

I think don't neet test gpe anymore, because we already know function
key emit scancode.


Thanks a lot!
Joey Lee