From: Akio Idehara <zbe64533@gmail.com>
To: seth.forshee@canonical.com
Cc: chris@chris-wilson.co.uk, intel-gfx@lists.freedesktop.org,
mjg59@srcf.ucam.org, platform-driver-x86@vger.kernel.org
Subject: Re: [PATCH] xf86-video-intel: Add support for toshiba backlight interface
Date: Thu, 15 Mar 2012 22:20:26 +0900 [thread overview]
Message-ID: <4F61EC9A.5070508@gmail.com> (raw)
In-Reply-To: <20120314145740.GA8693@ubuntu-macmini>
Seth Forshee wrote:
> On Wed, Mar 14, 2012 at 11:37:39PM +0900, Akio Idehara wrote:
>> xfce4-power-manager cannot control backlight brightness via
>> toshiba backlight sysfs interface.
>> The reason is that xf86-video-intel doesn't treat it.
>> This patch adds support for toshiba backlight sysfs interface.
>>
>> This was tested on a Toshiba Portege R500.
>>
>> Signed-off-by: Akio Idehara <zbe64533@gmail.com>
>
> This isn't a good idea. On many (probably most) Toshibas the platform
> backlight interface is read-only. I think this patch will break more
> machines than it fixes.
>
> I have a patch for toshiba_acpi that (among other things) makes it only
> register the backlight device if it can be written. I've just been
> sitting on it though because I haven't been able to get anyone with a
> read/write backlight interface to test it. If you'd be willing to help
> with testing then I can work on getting that patch into the kernel, then
> I wouldn't object to your patch.
>
> Seth
>
Hi Seth.
Thank you for telling me about this.
If I had known it, I'd never send this patch.
And I'd be happy to help with testing.
So please feel free to send me your patch!
Regards,
Akio
prev parent reply other threads:[~2012-03-15 13:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-14 14:37 [PATCH] xf86-video-intel: Add support for toshiba backlight interface Akio Idehara
2012-03-14 14:57 ` Seth Forshee
2012-03-15 13:20 ` Akio Idehara [this message]
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