Windows 10 Sleep button can still be selected in windows power option if acpi device(SLPB) not define.

[xxxl]

Hi,

I had a question about sleep button under windows,
and following conditions are shown,
[1]. windows 10.0.18363.418
[2]. acpi facp flag bit 5 =1, sleep button not support.
[3]. can't find sleep button (SLPB) acpi device in asl code.

According to aboves conditions,
sleep button should be gray out in windows ui,
but sleep button in power option can still be selected.

Does anyone know is it normal behavior of windows 10?

Thank you.

Reference :

Table 5-34 Fixed ACPI Description Table Fixed Feature Flags P.137

ACPI_6_3_final_Jan30.pdf

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