Messages in this thread | | | Date | Mon, 19 Jan 2015 14:09:34 +0100 | From | Sander Eikelenboom <> | Subject | Re: if power button pressed 1x it creates the same ACPI event twice |
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Hello Sander,
Tuesday, January 13, 2015, 5:47:24 PM, you wrote:
> Tuesday, January 13, 2015, 5:35:10 PM, you wrote:
>> Hi Rafael / Len,
>> When i press the power-button on my intel NUC, i get twp ACPI power-events shortly >> after one another (within a second), instead of just one.
>> It doesn't matter if i have the old /proc/acpi interface enabled or disabled in the kernel config.
>> I have tested a few older kernels lingering around on the box and 3.14 already >> has this problem. 3.2 (from the debian repo) doesn't have the problem, it only >> fires one event.
>> I did find another report: >> Re: lenovo ultrabay docking station: if power button pressed 1x it creates 2x the same ACPI event >> http://www.spinics.net/lists/linux-acpi/msg54723.html >> But that hasn't come to a conclusion ...
>> Unfortunately 3.2 - 3.19-rc4 is a bit of a largish bisect window, so that's >> unfeasible :-)
>> I compiled in apci debug support and tried: >> echo "0x00080000" > /sys/module/acpi/parameters/debug_layer >> echo "0xffffffff" > /sys/module/acpi/parameters/debug_level
>> But i don't get any extra output in dmesg ?
>> Do you have any ideas for a debug patch or better values to figure out what is going on ?
>> -- >> Sander
> Hmm is it normal that it registers in this way (twice) ?
> [ 5.817980] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0 > [ 5.837907] ACPI: Power Button [PWRB] > [ 5.847540] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input1 > [ 5.866915] ACPI: Power Button [PWRF]
> -- > Sander
Hi Rafael / Len,
Got some more time to test:
- It's indeed giving one event for both registered power buttons (which in reality are just one hardware button) printing acpid's "%e" revealed that: 1421672289-161192235 | button/power PBTN 00000080 00000000 1421672289-279647745 | button/power LNXPWRBN:00 00000080 00000004
So i tested on another box (amd instead of intel), and that also registers 2 power buttons:
# dmesg | grep -i button [ 13.435060] input: Power Button as /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0C:00/input/input0 [ 13.435294] ACPI: Power Button [PWRB] [ 13.435495] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input1 [ 13.435683] ACPI: Power Button [PWRF] So the question is .. should both register and should scripts adjust to pick up just one of them ? Or can, as a more general solution, just one be ignored when registering ?
-- Sander
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