Re: [regression] LID switch and /dev/input/event*

["Németh Márton" <nm127@freemail.hu>]

Zhao Yakui wrote:
> On Sat, 2008-08-23 at 23:43 +0200, Németh Márton wrote:
>> Hi,
>>
>> I am using Linux 2.6.27-rc4 on Clevo D410J laptop and the I can
>> query the LID switch state like this:
>>
>> # cat /proc/acpi/button/lid/LID/state
>> state:      open
>> # cat /proc/acpi/button/lid/LID/state
>> state:      closed
>>
>> If I check the event4, I get no events when the LID switch is pushed:
>>
>> # evtest /dev/input/event4
>> Input driver version is 1.0.0
>> Input device ID: bus 0x19 vendor 0x0 product 0x5 version 0x0
>> Input device name: "Lid Switch"
>> Supported events:
>>   Event type 0 (Sync)
>>   Event type 5 (?)
>>     Event code 0 (?)
>> Testing ... (interrupt to exit)
> It seems that the status of LID device is correct, but there is no LID
> input event. Right?
> Will you please enable the CONFIG_ACPI_DEBUG in kernel configuration and
> boot the system with the option of "acpi.debug_layer=0x00090004
> acpi.debug_level=0x01f"? 
> After pressing the LID switch several times, please attach the output of
> dmesg.
> 
> It will be great if you can attach the output of acpidump.
> 
> Of course you can open a new bug in bugzilla and attach the output of
> dmesg, acpidump.
> 
> http://bugzilla.kernel.org/enter_bug.cgi?product=ACPI
> 
> Thanks.

What I could find out since then is that the Linux kernel 2.6.25 is
working correctly, but 2.6.26-rc3 is bad. I am about to "git bisect"
the problem and I'll create a bugreport and provide the asked information.
This will take some time, however, as I am currently busy with different
topics.

>> The events are only reported if I suspend to RAM with "s2ram -f -p -s". I did
>> the following steps:
>>
>> 1. Execute "s2ram -f -p -s". Now the system suspends to RAM.
>> 2. Push the LID switch and hold it down.
>> 3. Wake the system with the POWER button.
>> 4. After the system is up, release the LID switch to see the screen.
>> 5. "evtest" reports the following line:
>>
>> Event: time 1219526119.163805, type 5 (?), code 0 (?), value 1
>>
>> 6. Execute "s2ram -f -p -s" again.
>> 7. Wake the system with the POWER button.
>> 8. "evtest" reports the following line:
>>
>> Event: time 1219526913.208803, type 5 (?), code 0 (?), value 0
>>
>> 	Márton Németh
>>
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> 
> 
> 

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