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From: Fabio Coatti <fabio.coatti@gmail.com>
To: joeyli <jlee@suse.com>
Cc: linux-kernel@vger.kernel.org, Bob Moore <robert.moore@intel.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Feng Tang <feng.tang@intel.com>, Len Brown <len.brown@intel.com>,
        MaChen@suse.com
Subject: Re: rf kill button not working on hp folio 9470m - bisected
Date: Mon, 14 Jan 2013 09:07:27 +0100
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In data luned́ 14 gennaio 2013 08:59:55, Fabio Coatti ha scritto:
> > hmm... this machine changed wlan0 status on working kernel and also emit
> > e078 code like on Windows 8 mode.
> > 
> > Then I think your machine control RF power by different way but BIOS,
> > maybe wmi or other ways.
> > 
> > Please attached on your DSDT, hope OEM do those things through ACPI.
> 
> Done; I've tried to recompile it with iasl and I've got hundreds of errors,
> not a good sign I fear. I'll try to upgrade the firmware, even last time I
> tried the operation failed.
> 
> > Please try acpi_osi="!Windows 2012", it will switch back to Windows 2009
> > mode. Then look at does things better than before?
> > 
> > 
> > Thanks a lot!
> > Joey Lee
> 
> Will do that right now and report asap.
> Many thanks for the answer!

Ok, just tried; I can confirm that with acpi_osi="!Windows 2012" the rfkill 
works again, as it worked before the commit reported. 
Incidentally, it also fixes the issue with lcd backlight that I reported 
before.

 
--
Fabio