Created attachment 279327
acpidump HP Omen 15 dc0307ng

I've checked the tables for PGON and found following in ssdt7:

        Method (PGON, 1, Serialized)
        {
            PION = Arg0
            If ((PION == Zero))
            {
                If ((SGGP == Zero))
                {
                    Return (Zero)
                }
            }
            ElseIf ((PION == One))
            {
                If ((P1GP == Zero))
                {
                    Return (Zero)
                }
            }
            ElseIf ((PION == 0x02))
            {
                If ((P2GP == Zero))
                {
                    Return (Zero)
                }
            }

            PEBA = \XBAS /* External reference */
            PDEV = GDEV (PION)
            PFUN = GFUN (PION)
            Name (SCLK, Package (0x03)
            {
                One,
                0x0100,
                Zero
            })
            If ((DerefOf (SCLK [Zero]) != Zero))
            {
                PCRA (0xDC, 0x100C, ~DerefOf (SCLK [One]))
                Sleep (0x10)
            }

            If ((CCHK (PION, One) == Zero))
            {
                Return (Zero)
            }

            GPPR (PION, One)
            RTEN (PION)
            If ((PBGE != Zero))
            {
                If (SBDL (PION))
                {
                    PUAB (PION)
                    CBDL = GUBC (PION)
                    MBDL = GMXB (PION)
                    If ((CBDL > MBDL))
                    {
                        CBDL = MBDL /* \_SB_.PCI0.MBDL */
                    }

                    PDUB (PION, CBDL)
                }
            }

            \_SB.PCI0.PEG0.LREN = \_SB.PCI0.PEG0.PEGP.LTRE
            \_SB.PCI0.PEG0.CEDR = One
            While ((\_SB.PCI0.PEG0.LNKS < 0x03))
            {
                Sleep (One)
            }

            If ((PION == Zero))
            {
                S0VI = H0VI /* \_SB_.PCI0.H0VI */
                S0DI = H0DI /* \_SB_.PCI0.H0DI */
                LCT0 = ((ELC0 & 0x43) | (LCT0 & 0xFFBC))
            }
 
The interesting part here: \_SB.PCI0.PEG0.LNKS < 0x03
As far as I understand it should be always 0x04 as it is set only once inside the ssdt12:

    Scope (\_SB.PCI0.PEG0)
    {
        OperationRegion (MSID, SystemMemory, EBAS, 0x0500)
        Field (MSID, DWordAcc, Lock, Preserve)
        {
            VEID,   16,
            Offset (0x40),
            NVID,   32,
            Offset (0x4C),
            ATID,   32,
            Offset (0x88),
            PASM,   2,
            Offset (0x48B),
                ,   1,
            NHDA,   1
        }

        OperationRegion (RPCX, SystemMemory, ((\XBAS + 0x8000) + Zero), 0x1000)
        Field (RPCX, ByteAcc, NoLock, Preserve)
        {
            Offset (0x04),
            CMDR,   8,
            Offset (0x19),
            PRBN,   8,
            Offset (0x84),
            D0ST,   2,
            Offset (0xAA),
            CEDR,   1,
            Offset (0xB0),
            ASPM,   2,
                ,   2,
            LNKD,   1,
            Offset (0xC9),
                ,   2,
            LREN,   1,
            Offset (0x216),
            LNKS,   4

Here is the only place I can find LNKS initialized to 4.

I'll try to remove the while loop for a test and compile a custom dsdt for a test.

Question: Can some acpi expert tell me what this LNKS is for?