Re: acer-wmi: Nitro button doesn't produce a WMI event

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On Thu, Jan 2, 2025 at 1:51 AM Armin Wolf <W_Armin@xxxxxx> wrote:
>
> Am 01.01.25 um 20:53 schrieb Hridesh MG:
>
> >> This ACPI method should trigger the turbo mode button (found inside the DSDT table):
> >>
> >>          Method (_Q58, 0, NotSerialized)  // _Qxx: EC Query, xx=0x00-0xFF
> >>           {
> >>                  Debug = "=====PROJECT_QUERY_58====="
> >>                   ^^^WMID.FEBC [Zero] = 0x07
> >>                   ^^^WMID.FEBC [One] = 0x04
> >>                   ^^^WMID.FEBC [0x02] = One
> >>                   Notify (WMID, 0xBC) // Device-Specific
> >>          }
> >>
> > I feel like an idiot right now but I just realized something: So far
> > I've been assuming that the button I've been calling the "Turbo
> > Button" worked the same way on both Nitro and Predator laptops, but
> > that's not the case.
> >
> > On Predator laptops, the button directly enables Turbo mode but on the
> > Nitro it only opens the Nitro Sense app. I had assumed that both
> > buttons simply opened the app and that directly enabling Turbo mode
> > was a feature provided by the Linux driver.
> >
> > Given this, the ACPI code that you linked earlier is probably for the
> > Predator's "Turbo Button". Could it be that the button on my laptop
> > doesn’t use that ACPI code at all, considering its functionality is
> > completely different? (Though i doubt Acer would leave it in if it
> > wasn't being used)
>
> It is quite common for manufactures to just copy and paste ACPI code snippets, so it is not
> unusual to have some unused code inside the ACPI tables.
>
> Did you receive any input events or dmesg messages when pressing that button?
>
> If no then it could also be that this button depends on the Intel THC touch controller to work,
> take a look at https://lore.kernel.org/all/20241216014127.3722172-1-even.xu@xxxxxxxxx for details
> about the Intel THC controller.
>
> Thanks,
> Armin Wolf
>

I do receive input events, it shows up with the keycode 433 and symbol
XF86Presentation. I think you mentioned something regarding an i8042
filter, can we use that to call the function to cycle between the
profiles?

--
Thanks,
Hridesh MG





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