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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
