https://bugzilla.kernel.org/show_bug.cgi?id=102761

            Bug ID: 102761
           Summary: Surface 3 Hardware Buttons Not Recognized
           Product: ACPI
           Version: 2.5
    Kernel Version: 4.2.0-rc6
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Power-Other
          Assignee: [email protected]
          Reporter: [email protected]
        Regression: No

Created attachment 184751
  --> https://bugzilla.kernel.org/attachment.cgi?id=184751&action=edit
acpidump

Power button (and other hardware buttons including volume up/down and
capacitive home button) on the Microsoft Surface 3 fail to function under 4.2.
They do not seem to be detected at all, nor do they seem to raise any events
when pressed.

I do not see any relationship between pressing the hardware keys and changes in
/proc/interrupts. There is also no file at /sys/firmware/acpi/interrupts.

Running acpid and acpi_listen generates no events when pressing the
power/volume/capacitive windows keys on the device.

The patch in #84651 does not change any of this behaviour.

The only item under /proc/acpi/button is lid, which always reports "closed"
irrespective of the position of the attached Type Cover.

There are numerous other ACPI issues with this device, but this seems like an
easy place to start.

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