From: Fabio Coatti <fabio.coatti@gmail.com>
To: joeyli <jlee@suse.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
Bob Moore <robert.moore@intel.com>,
Feng Tang <feng.tang@intel.com>, Len Brown <len.brown@intel.com>,
Tom St Denis <tstdenis@elliptictech.com>,
linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Subject: Re: 3.7.X vs 3.6.11 HP Folio 9470m brightness regression?
Date: Mon, 14 Jan 2013 12:26:47 +0100 [thread overview]
Message-ID: <5712575.oJ4QknpJbe@calvin> (raw)
In-Reply-To: <1358157059.14569.16.camel@linux-s257.site>
In data lunedì 14 gennaio 2013 17:50:59, joeyli ha scritto:
> 於 一，2013-01-14 於 09:13 +0100，Fabio Coatti 提到：
>
> > While looking at a different issue (rfkill), related to this commit:
> > ====
> >
> > > a57f7f9175b8ccbc9df83ac13860488913115de4 is the first bad commit
> > > commit a57f7f9175b8ccbc9df83ac13860488913115de4
> > > Author: Bob Moore <robert.moore@intel.com>
> > > Date: Fri Aug 17 10:55:02 2012 +0800
> > >
> > > ACPICA: Add Windows8/Server2012 string for _OSI method.
> > > This change adds a new _OSI string, "Windows 2012" for both Windows 8
> > > and Windows Server 2012.
> > >
> > > >From Microsoft document "How to Identify the Windows Version in ACPI
> > >
> > > by Using _OSI", July 13, 2012.
> > >
> > > Signed-off-by: Bob Moore <robert.moore@intel.com>
> > > Signed-off-by: Feng Tang <feng.tang@intel.com>
> > > Signed-off-by: Len Brown <len.brown@intel.com>
> >
> > ====
> >
> > I discovered that reverting this commit (or, as suggested by joeyli
> > <jlee@suse.com>, booting with acpi_osi="!Windows 2012" ) also fixes
> > the brightness issue. So it seems related to the same ACPI issue, now
> > I wonder how it's happened that I got the wrong commit while
> > bisecting. Sorry for the noise, now the issue is still there but makes
> > more sense ):)
>
> Use "!Windows 2012" can fallback to Windows 2009 mode for workaround
> rkfill button and brightness issue on your machine, but we still have
> problem with Windows 2012 mode.
>
> That means we need spend more time to trace the dsdt stuff for guess
> what's behavior on HP machine with Windows 8.
>
>
> Thanks a lot!
> Joey Lee
Just let me know if I can help in some way (always available for testing).
Many thanks.
--
Fabio
prev parent reply other threads:[~2013-01-14 11:26 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
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 [this message]
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