https://bugzilla.kernel.org/show_bug.cgi?id=213031

--- Comment #25 from Hui Wang (hui.w...@canonical.com) ---
(In reply to Dmitry Torokhov from comment #24)
> What are the original level and trigger values for IRQ1, before we remap
> them to "edge, high"?

Through disassembling DSDT, the original level and trigger is LEVEL_LOW.

      Device (PS2K)
        {
            Name (_HID, "MSFT0001")  // _HID: Hardware ID
            Name (_CID, EisaId ("PNP0303") /* IBM Enhanced Keyboard
(101/102-key, PS/2 Mouse) */)  // _CID: Compatible ID
            Name (_UID, Zero)  // _UID: Unique ID
            Method (_STA, 0, NotSerialized)  // _STA: Status
            {
                Return (0x0F)
            }

            Name (_CRS, ResourceTemplate ()  // _CRS: Current Resource Settings
            {
                IO (Decode16,
                    0x0060,             // Range Minimum
                    0x0060,             // Range Maximum
                    0x00,               // Alignment
                    0x01,               // Length
                    )
                IO (Decode16,
                    0x0064,             // Range Minimum
                    0x0064,             // Range Maximum
                    0x00,               // Alignment
                    0x01,               // Length
                    )
                IRQ (Level, ActiveLow, Exclusive, )
                    {1}

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