RE: EC interrupt mode by default breaks power button and lid button

["Yu, Luming" <luming.yu@intel.com>]

Please don't revert that patch, and test kernel parameter ec_intr=0
Also, please send me acpidump output.

I'm wondering how ec interrupt mode breaks power & lid button.

Thanks
Luming 

>-----Original Message-----
>From: Gerhard Schrenk [mailto:deb.gschrenk@gmx.de] 
>Sent: 2006年2月6日 2:04
>To: Brown, Len
>Cc: Yu, Luming; linux-kernel@vger.kernel.org
>Subject: EC interrupt mode by default breaks power button and 
>lid button
>
>Hi,
>
>the following commit breaks power button and lid button on my centrino
>notebook (MSI S260; branded as Medion SIM S2100).
>
>|gps@medusa:~/scratch/kernel-tree$ git bisect good
>|53f11d4ff8797bcceaf014e62bd39f16ce84baec is first bad commit
>|diff-tree 53f11d4ff8797bcceaf014e62bd39f16ce84baec (from 
>02b28a33aae93a3b53068e0858d62f8bcaef60a3)
>|Author: Len Brown <len.brown@intel.com>
>|Date:   Mon Dec 5 16:46:36 2005 -0500
>|
>|    [ACPI] Enable Embedded Controller (EC) interrupt mode by default
>|    
>|    "ec_intr=0" reverts to polling
>|    "ec_burst=" no longer exists.
>|    
>|    Signed-off-by: Len Brown <len.brown@intel.com>
>|    Acked-by: Luming Yu <luming.yu@intel.com>
>|
>|:040000 040000 9eec66712c68ebe372b2fb2c8d78bdc99df942ab 
>e7e62cd09983730aee468edd4ba1cce50786b7e5 M      Documentation
>|:040000 040000 6e7db46918f6124f64a11f6757560078a8a27519 
>aa8abb1023024902300cb2e7a5bf74acd8c579e8 M      drivers
>
>With
>
>  git revert 53f11d4ff8797bcceaf014e62bd39f16ce84baec
>
>on top of linus' tree I have no problems with power/lid buttons and my
>acpid configuration.
>
>Suspend to disk/mem (at least for some seconds/minutes thereafter) with
>an unpatched kernel from linus' tree is another possibility to bring
>power/lid events back to life.
>
>On my debian (etch) system I have following acpid(?) 1.0.4-3 
>configuration:
>
>|gps@medusa$ cat /etc/acpi/events/my_lid
>|event=button[ /]lid
>|action=/etc/acpi/actions/my_lid.sh %e
>
>|gps@medusa:~$ cat /etc/acpi/actions/my_lid.sh 
>|#!/bin/sh
>|# lid button pressed/released event handler
>|
>|# echo "lid-event" | wall
>|echo platform > /sys/power/disk
>|echo disk > /sys/power/state
>
>|gps@medusa:~$ cat /etc/acpi/events/powerbtn 
>|event=button[ /]power
>|action=/etc/acpi/actions/my_powerbtn.sh
>
>|gps@medusa:~$ cat /etc/acpi/actions/my_powerbtn.sh 
>|#!/bin/sh
>|# suspend to disk (hybernation) when the power button has 
>been pressed 
>|# echo "power-button-event" | wall
>|echo mem > /sys/power/state
>
>-- Gerhard
>
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