linux-kernel - Re: [PATCH] acer-wmi: blacklist Thinkpad edge E520

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Date:	Tue, 25 Oct 2011 06:20:31 +0800
From:	joeyli <jlee@...e.com>
To:	Ike Panhc <ike.pan@...onical.com>
Cc:	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
	Matthew Garrett <mjg@...hat.com>, Joey Lee <jlee@...ell.com>
Subject: Re: [PATCH] acer-wmi: blacklist Thinkpad edge E520

Hi Ike, 

於 二，2011-10-18 於 10:20 +0800，Ike Panhc 提到：
> Hi Joey,
> 
> On 10/18/2011 09:48 AM, joeyli wrote:
> > Hi Ike, 
> > 
> > Could you please attached on the "rfkill list" output when press Fn key?
> > Then we can check the rfkill status change.
> 
> The output of rfkill list is at
>   https://launchpadlibrarian.net/78485925/RfKill.txt
> 
> .. and bug reporter tells me that he can not unblock wireless.
>   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836865/comments/0
> 
> > 
> > And, 
> > Thinkpad E520 have AMW0 method and I thought acer-wmi query wrong EC
> > register address so your acer-wireless was always soft-blocked.
> > 
> > Does it possible kindly help me to find out which register on E520 is
> > mapping to wireless status? Please reference to Carlos's acer_ec.pl
> > tool:
> > 
> > http://code.google.com/p/aceracpi/wiki/EmbeddedController
> > 
> > Simple use:
> >         watch -n 1 perl acer_ec.pl regs
> > 
> > Then press your wireless Fn key to monitor which register changed when
> > you press Fn key:
> > 
> > e.g. the register at row B0 and column 0A is register 0xBA (0x is used
> > to indicate this is a hexadecimal number).
> > 
> > There maybe have other EC register changing when you press key, please
> > do a couple of times and make sure you find out the right one.
> > 
> > If we are lucky, we can find out one EC register mapping to your
> > wireless state.
> 
> I've asked bug reporter to do so. Unfortunately nothing useful found.
> 
> Please refer to the link below:
>   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836865/comments/13
>   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836865/comments/14
> 
> The full discussion is at
>   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836865
> 

Bad! 

I also didn't see useful things from DSDT, looks like the control
doesn't through EC.

Let's add this device to blacklist!


Thank's
Joey Lee


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