Re: [PATCH] gpiolib: acpi: Ignore AC adapter wakeup on ASUS FA507

[Mario Limonciello <superm1@kernel.org>]

On 9/28/26 04:41, Mika Westerberg wrote:
> Hi,
> 
> On Sun, Sep 27, 2026 at 04:42:12AM +0300, Bartu Alev wrote:
>> The ASUS TUF Gaming A15 FA507 wakes from s2idle whenever the AC
>> adapter is plugged in or unplugged.
>>
>> In the CPMGPIO0 SSDT, GPIO pin 23 (0x0017) is declared in the
>> \_SB.GPIO._AEI resource template as:
>>
>>      GpioInt (Edge, ActiveBoth, ExclusiveAndWake, PullNone, 0x0000,
>>               "\\_SB.GPIO", 0x00, ResourceConsumer, ,)
>>               { 0x0017 }
>>
>> and the corresponding \_SB.GPIO._EVT handler issues a device wake
>> notification for the AC adapter on pin 23 events:
>>
>>      Case (0x17)
>>      {
>>          Notify (\_SB.ACAD, 0x02) // Device Wake
>>          Sleep (0x05)
>>          Notify (\_SB.ACAD, 0x80) // Status Change
>>      }
>>
>> Both AC plug and unplug transitions therefore trigger a spurious
>> wakeup from s2idle. Add an ignore_wake quirk for this pin.
> 
> I would think this is by design like that.
> 
> What is the issue? You unplug the device from AC with lid closed and it
> wakes up? Userspace should put it back to sleep in these cases. In Windows
> and ChromeOS there is something called "dark resume" that deals with this
> but I'm not sure if generic distros have that yet.

I tend to agree with Mika.  If there is dedicated GPIO being triggered 
on AC adapter events with a Notify(0x02) it was OEM intended to wake the 
system.

FWIW I did have a design proposal to systemd for generic distros to add 
some behavior around dark resume.

https://github.com/systemd/systemd/issues/27077

I also had started a PR but didn't really garner interest:

https://github.com/systemd/systemd/pull/37142

As you have a system this can strongly benefit, feel free to take the 
torch on trying to develop a userland solution.