linux-kernel - Re: rf kill button not working on hp folio 9470m

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Date:	Mon, 14 Jan 2013 10:45:27 +0800
From:	joeyli <jlee@...e.com>
To:	Fabio Coatti <fabio.coatti@...il.com>
Cc:	linux-kernel@...r.kernel.org, Bob Moore <robert.moore@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Feng Tang <feng.tang@...el.com>,
	Len Brown <len.brown@...el.com>, MaChen@...e.com
Subject: Re: rf kill button not working on hp folio 9470m - bisected

Hi Fabio, 

於 日，2013-01-13 於 23:11 +0100，Fabio Coatti 提到：
> Hi all,
> on my laptop (hp folio 9470m), the rfkill button works fine on 3.6.10

Does rfkill button means Fn+F12 key on your machine?

> and 11 (don't know about older kernels), but is not working on 3.7.X
> (latest tested is 3.7.2).
> On non working kernel, log shows the following messages:
> 
> Jan 13 17:34:33 calvin kernel: atkbd serio0: Unknown key pressed
> (translated set 2, code 0xf8 on isa0060/serio0).
> Jan 13 17:34:33 calvin kernel: atkbd serio0: Use 'setkeycodes e078
> <keycode>' to make it known.

Looks your machine emit e078 code when it switch to Windows 8 code path.
Please tail your log and press Fn key for make sure it emit e078 code.

I didn't see e078 code in hewlett-packard keymap file in udev, currently
it define 0xD7 to be the wlan key.

> Jan 13 17:34:33 calvin kernel: atkbd serio0: Unknown key released
> (translated set 2, code 0xf8 on isa0060/serio0).
> Jan 13 17:34:33 calvin kernel: atkbd serio0: Use 'setkeycodes e078
> <keycode>' to make it known.
> Jan 13 17:34:34 calvin kernel: atkbd serio0: Unknown key pressed
> (translated set 2, code 0xf8 on isa0060/serio0).
> Jan 13 17:34:34 calvin kernel: atkbd serio0: Use 'setkeycodes e078
> <keycode>' to make it known.
> Jan 13 17:34:35 calvin kernel: atkbd serio0: Unknown key released
> (translated set 2, code 0xf8 on isa0060/serio0).
> Jan 13 17:34:35 calvin kernel: atkbd serio0: Use 'setkeycodes e078
> <keycode>' to make it known.
> 
> On working kernels, same logs shows the following lines:
> 
> Jan 13 22:55:59 calvin kernel: atkbd serio0: Unknown key pressed
> (translated set 2, code 0xf8 on isa0060/serio0).
> Jan 13 22:55:59 calvin kernel: atkbd serio0: Use 'setkeycodes e078
> <keycode>' to make it known.
> Jan 13 22:55:59 calvin NetworkManager[4823]: <info> WiFi now enabled
> by radio killswitch
> Jan 13 22:55:59 calvin NetworkManager[4823]: <info> (wlan0): bringing up device.
> Jan 13 22:55:59 calvin kernel: iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S
> Jan 13 22:55:59 calvin kernel: iwlwifi 0000:03:00.0: Radio type=0x2-0x1-0x0
> Jan 13 22:55:59 calvin kernel: atkbd serio0: Unknown key released
> (translated set 2, code 0xf8 on isa0060/serio0).

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.

> Jan 13 22:55:59 calvin kernel: atkbd serio0: Use 'setkeycodes e078
> <keycode>' to make it known.
> 
> I've tried to bisect the regression, and I've got this:
> 
> a57f7f9175b8ccbc9df83ac13860488913115de4 is the first bad commit
> commit a57f7f9175b8ccbc9df83ac13860488913115de4
> Author: Bob Moore <robert.moore@...el.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@...el.com>
> Signed-off-by: Feng Tang <feng.tang@...el.com>
> Signed-off-by: Len Brown <len.brown@...el.com>
> 
> :040000 040000 55311ce2f9fed66501b06f93f67fa99b54d46e86
> 998889c21c3b68f8072ad131b643c592a4cbe423 M drivers
> 
> I've reverted this commit in 3.7.2 and now the rfkill button is
> working just fine, so it seems the real culprit (well, I have no
> knowledge about acpi so I say so only because reverting it fixes the
> issue)
> Please forgive me If I'm completely wrong  :)
> 
> --
> Fabio

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

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