Re: hp-wmi: info hotkey has no keycode or scancode

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On 1/25/24 21:53, Armin Wolf wrote:
> Am 23.01.24 um 20:58 schrieb Armin Wolf:
>> Am 23.01.24 um 16:34 schrieb Hans de Goede:
>>> Hi,
>>> On 1/23/24 16:13, Dennis Nezic wrote:
>>>> On 23 Jan 15:22, Armin Wolf wrote:
>>>>> Am 23.01.24 um 09:58 schrieb Armin Wolf:
>>>>>> Am 23.01.24 um 05:40 schrieb Dennis Nezic:
>>>>>>> On 22 Jan 22:23, Dennis Nezic wrote:
>>>>>>>> On 22 Jan 11:44, Armin Wolf wrote:
>>>>>>>>> Am 22.01.24 um 08:05 schrieb Dennis Nezic:
>>>>>>>>>> On 21 Jan 16:16, Armin Wolf wrote:
>>>>>>>>>>> Am 20.01.24 um 22:39 schrieb Dennis Nezic:
>>>>>>>>>>>> On 20 Jan 21:52, Armin Wolf wrote:
>>>>>>>>>>>>> Am 20.01.24 um 19:58 schrieb Dennis Nezic:
>>>>>>>>>>>>>> Guys, the "info" illuminated touch-key (hotkey?) on my laptop
>>>>>>>>>>>>>> "doesn't
>>>>>>>>>>>>>> work", showkey doesn't report any keycode or scancode. I
>>>>>>>>>>>>>> don't
>>>>>>>>>>>>>> see any
>>>>>>>>>>>>>> wmi related error messages from dmesg. All the other
>>>>>>>>>>>>>> illuminated
>>>>>>>>>>>>>> "hotkeys" work fine, although confusingly evtest and
>>>>>>>>>>>>>> "libinput
>>>>>>>>>>>>>> debug-events" report that they're coming through the event
>>>>>>>>>>>>>> interface
>>>>>>>>>>>>>> associated with "AT Translated Set 2 keyboard" instead of
>>>>>>>>>>>>>> "HP WMI
>>>>>>>>>>>>>> hotkeys", but hey, as long as I receive them I'm okay :p.
>>>>>>>>>>>>>> hp-wmi.c does seem to reference it:
>>>>>>>>>>>>>> How can I go about troubleshooting this? (I'm using kernel
>>>>>>>>>>>>>> 6.6.8)
>>>>>>>>>>>>> it can be possible that your machine does not use hp-wmi to
>>>>>>>>>>>>> deliver keycodes
>>>>>>>>>>>>> to the operating system, but instead emulates a standard
>>>>>>>>>>>>> keyboard controller.
>>>>>>>>>>>>> Can you check with "kacpimon" that events concerning a PNP0C14
>>>>>>>>>>>>> device are being
>>>>>>>>>>>>> received?
>>>>>>>>>>>> Very possible indeed. "kacpimon" doesn't show anything when I
>>>>>>>>>>>> press that
>>>>>>>>>>>> touchkey, but it does when I press all the other touchkeys. (I
>>>>>>>>>>>> do get
>>>>>>>>>>>> lots of accelerometer noise.)
>>>>>>>>>>> Interesting, can you please share the output of:
>>>>>>>>>>> - "kacpimon" while you where pressing the buttons
>>>>>>>>>>> - "acpidump"
>>>>>>>>>> ...
>>>>>>>>> Those events are touchscreen events, maybe your mouse is
>>>>>>>>> responsible for them.
>>>>>>>> Right, of course, woops, these must have been the touchpad press
>>>>>>>> events,
>>>>>>>> as I was moving the mouse around :P
>>>>>>>>> Instead they look like this:
>>>>>>>> I'm definitely not seeing anything like that, just "^Input Layer:
>>>>>>>> Type"'s
>>>>>>>>> Can you try to use kacpimon again but without root privileges?
>>>>>>>>> This
>>>>>>>>> way only netlink events show up.
>>>>>>>>> You might also stop acpid while you are using kacpimon.
>>>>>>>> 0 output from/with netlink, even though kacpimon said:
>>>>>>>> Netlink ACPI Family ID: 24
>>>>>>>> Netlink ACPI Multicast Group ID: 5
>>>>>>>> netlink opened successfully
>>>>>>>> Remember all my other fancy hotkeys "work", but they appear as
>>>>>>>> regular
>>>>>>>> keypress events from an "AT Translated Set 2 keyboard".
>>>>>>>>> If you still cannot receive any netlink events, then i might need
>>>>>>>>> to take a look at your ACPI tables
>>>>>>>>> via acpidump.
>>>>>>>>> Thanks,
>>>>>>>>> Armin Wolf
>>>>>>>> Thank you again sir!
>>>>>>> A1799AC3-9429-4529-927E-DFE13736EEBA has zero instances
>>>>>>> 8232DE3D-663D-4327-A8F4-E293ADB9BF05 has zero instances
>>>>>>> 8F1F6436-9F42-42C8-BADC-0E9424F20C9A has zero instances
>>>>>>> 8F1F6435-9F42-42C8-BADC-0E9424F20C9A has zero instances
>>>>>>> (Btw that "info" key does get illuminated when I touch/press it,
>>>>>>> even
>>>>>>> though no codes are seen.)
>>>>>> These warnings in dmesg are harmless, they are informing you that
>>>>>> some
>>>>>> WMI devices are unavailable.
>>>>>> I took a look at your ACPI tables and it seems that the WMI device
>>>>>> used by hp-wmi is indeed unused.
>>>>>> What is the model name of your HP notebook?
>>>> HP Compaq 8710p
>>>>> Also i just noted that your notebook might contain a PNP0C32
>>>>> quickstart button device.
>>>>> Can you tell me the output of "cat
>>>>> /sys/bus/acpi/devices/PNP0C32\:00/status"?
>>>> 15
>>> Interesting.
>>> There have been several attempts to add support for this
>>> in the past. The last one being:
>>> Note that in this case this also required some vender
>>> specific poking in toshiba_acpi to get things to work.
>>> I see that the HP Compaq 8710p is about the same vintage
>>> as the Toshiba Z830 on which the last attempt to do
>>> something about the quick start buttons was done.
>>> So this might very well explain the missing button issue.
>>> Regards,
>>> Hans
>> I can try to upstream the necessary changes. But i cannot test the
>> changes concerning the toshiba_acpi driver.
>> Would it be ok if i omit those changes?
>> Dennis, can you check that your device runs the latest BIOS? And if
>> this is not the case, could you do a BIOS
>> update and send me an updated acpidump?
>> The reason for this is that currently, the button device receives only
>> system wake events, but no button press
>> events during runtime. Maybe this is a BIOS bug, although this could
>> also be intentional (fancy power button).
>> Armin Wolf
> Hi,
> while modifying the quickstart button driver to use the standard pm wake infrastructure, i have run into a
> little problem: how to properly hook up the platform device with the ACPI device wakeup infrastructure?
> Is this possible when using a platform driver, or do i need to use a ACPI driver?

I'm not sure what exactly you are looking for but I think the powerbutton
handling in: drivers/platform/x86/intel/hid.c (search for wakeup) may help ?

If that does not help can you point me to the lines of code in the old version
of the code which you are trying to adjust ?



> Thanks,
> Armin Wolf

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