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

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Date:	Tue, 18 Oct 2011 09:48:11 +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, 

Could you please attached on the "rfkill list" output when press Fn key?
Then we can check the rfkill status change.

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.


Thank's
Joey Lee

於 五，2011-10-14 於 10:48 +0800，Ike Panhc 提到：
> Hi Joey,
> 
> Here you are.
> 
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/836865/+attachment/2330828/+files/AcpiTables.txt
> 
> 
> On 10/14/2011 12:35 AM, joeyli wrote:
> > Hi Ike, 
> > 
> > 於 四，2011-10-13 於 14:51 +0800，Ike Panhc 提到：
> >> BugLink: http://launchpad.net/bugs/836865
> >> BugLink: http://launchpad.net/bugs/826784
> >>
> >> There are reports say that acer-wmi is loaded on Thinkpad E520 which
> >> cause wireless connection hard blocked and we can not unblock it. It
> >> will be better not to load acer-wmi on this machine.
> >>
> >> Signed-off-by: Ike Panhc <ike.pan@...onical.com>
> >> ---
> >>  drivers/platform/x86/acer-wmi.c |    7 +++++++
> >>  1 files changed, 7 insertions(+), 0 deletions(-)
> >>
> >> diff --git a/drivers/platform/x86/acer-wmi.c b/drivers/platform/x86/acer-wmi.c
> >> index af2bb20..dc9a116 100644
> >> --- a/drivers/platform/x86/acer-wmi.c
> >> +++ b/drivers/platform/x86/acer-wmi.c
> >> @@ -325,6 +325,13 @@ static struct dmi_system_id __devinitdata acer_blacklist[] = {
> >>  			DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
> >>  		},
> >>  	},
> >> +	{
> >> +		.ident = "Lenovo Thinkpad Edge E520",
> >> +		.matches = {
> >> +			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
> >> +			DMI_MATCH(DMI_PRODUCT_NAME, "114320U"),
> >> +		},
> >> +	},
> >>  	{}
> >>  };
> >>  
> > 
> > Could you please share Thinkpad edge E520's acpidump and dmidecode log
> > to me? 
> > Maybe we can capture how does it works with EC register like we support
> > Ideapad S205 in acer-wmi driver.
> > 
> > Add a machine to blacklist is a last resort, I don't want to accept it
> > before we try.
> > 
> > 
> > Thank's a lot!
> > Joey Lee
> > 
> > 
> > --
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> 
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