From: Tom St Denis <tstdenis@elliptictech.com>
To: Fabio Coatti <fabio.coatti@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 3.7.X vs 3.6.11 HP Folio 9470m brightness regression?
Date: Wed, 19 Dec 2012 17:10:29 -0500 (EST) [thread overview]
Message-ID: <1520620637.200975.1355955029721.JavaMail.root@elliptictech.com> (raw)
In-Reply-To: <CADpTngWCVWzDY+++q3n5BtcECT4tVeVKvYppj-1UHw0=MLvK3g@mail.gmail.com>
----- Original Message -----
> From: "Fabio Coatti" <fabio.coatti@gmail.com>
> To: linux-kernel@vger.kernel.org
> Sent: Wednesday, 19 December, 2012 5:01:30 PM
> Subject: 3.7.X vs 3.6.11 HP Folio 9470m brightness regression?
>
> Hi,
> I'm testing kernels 3.7.X vs 3.6.11 on an HP Folio 9470m machine,
> i915
> driver for a VGA compatible controller: Intel Corporation 3rd Gen
> Core
> processor Graphics Controller (rev 09) 8086:0166
>
> With 3.6.11, the brightness can be correctly set using fn+f9/10: kde
> shows the bar and brightness changes.
>
> With 3.7.1 kde shows the percentage bar and
> /sys/class/backlight/acpi_video0/brightness is updated, but the
> screen
> brightness does not changes.
I had a similar problem with my Dell laptop and i915/acpi...
Is there another acpi_video? device? In my case two showed up in 3.7 whereas in 3.6 there was one. In 3.7 it was controlling the wrong one apparently.
Tom St Denis
next prev parent reply other threads:[~2012-12-19 22:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-19 22:01 3.7.X vs 3.6.11 HP Folio 9470m brightness regression? Fabio Coatti
2012-12-19 22:10 ` Tom St Denis [this message]
2012-12-20 9:27 ` Fabio Coatti
2013-01-12 11:22 ` Fabio Coatti
2013-01-12 12:42 ` Daniel Vetter
2013-01-12 20:35 ` Fabio Coatti
2013-01-14 8:13 ` Fabio Coatti
2013-01-14 9:50 ` joeyli
2013-01-14 11:26 ` Fabio Coatti
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