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DW1830 Bluetooth not available (power saving issue?)

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ZombieBest said:
Yes. Right after sleep it's not red. Then it becomes red after 2 mins or as soon as I try to connect something. But only when I wake up while on battery and BT is detected as BCM2045A0.
Click to expand...

Something is causing the BT controller to disconnect from the USB bus.
 
RehabMan said:
Something is causing the BT controller to disconnect from the USB bus.
Click to expand...
But why this does not happen when on AC? If I wake up on AC BT is detected as BCM920703 (and not BCM2045A0) and it works.
 
ZombieBest said:
But why this does not happen when on AC? If I wake up on AC BT is detected as BCM920703 (and not BCM2045A0) and it works.
Click to expand...

Could be something ACPI is doing or even the EC.
 
ZombieBest said:
What's your advice? because I don't know where to look at

Thank you
Click to expand...

I would start looking at all the code that executes upon wake in ACPI...
 
RehabMan said:
I would start looking at all the code that executes upon wake in ACPI...
Click to expand...
So I should put some "method logs" in DSDT to see in system.log which methods are called after sleep?
Is there a patch to do that?
 
ZombieBest said:
So I should put some "method logs" in DSDT to see in system.log which methods are called after sleep?
Is there a patch to do that?
Click to expand...

As per ACPI specification (you should read it), _WAK is called on wake from sleep.
 
So this is the method called from _WAK to (I guess from reading docs) notify all device drivers of the return from sleep state.
The problem is that it's too complicated to understand, too many methods to check. I've tried to search for XHC or something like that, but I really don't know what to check. Do I need to study all the 1000 pages of doc?
Code: 
    Method (RWAK, 1, Serialized)
    {
        P8XH (One, 0xAB)
        ADBG ("_WAK")
        \_SB.PCI0.GEXP.INVC ()
        If (LEqual (S0ID, One))
        {
            Store (One, \_SB.SCGE)
        }

        If (NEXP)
        {
            If (And (OSCC, 0x02))
            {
                \_SB.PCI0.NHPG ()
            }

            If (And (OSCC, 0x04))
            {
                \_SB.PCI0.NPME ()
            }
        }

        If (LEqual (Arg0, 0x03))
        {
            Store (0x0E, SSMP)
        }

        If (LEqual (Arg0, 0x03)) {}
        If (LOr (LEqual (Arg0, 0x03), LEqual (Arg0, 0x04)))
        {
            If (And (GBSX, 0x40))
            {
                \_SB.PCI0.GFX0.IUEH (0x06)
            }

            If (And (GBSX, 0x80))
            {
                \_SB.PCI0.GFX0.IUEH (0x07)
            }

            If (CondRefOf (\_PR.DTSE))
            {
                If (LAnd (\_PR.DTSE, LGreater (TCNT, One)))
                {
                    TRAP (0x02, 0x14)
                }
            }

            OperationRegion (NVID, SystemMemory, 0xE0100000, 0x02)
            Field (NVID, ByteAcc, NoLock, Preserve)
            {
                VVID,   16
            }

            If (LGreaterEqual (OSYS, 0x07D9))
            {
                If (LEqual (VVID, 0x10DE))
                {
                    If (LEqual (NHDA, One))
                    {
                        Store (One, \_SB.PCI0.PEG0.PEGP.MLTF)
                    }
                    Else
                    {
                        Store (Zero, \_SB.PCI0.PEG0.PEGP.MLTF)
                    }
                }
            }

            If (LEqual (TBTS, One))
            {
                Acquire (OSUM, 0xFFFF)
                \_GPE.TINI ()
                Release (OSUM)
            }

            If (LNotEqual (\_SB.PCI0.RP01.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP01, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP02.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP02, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP03.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP03, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP04.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP04, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP05.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP05, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP06.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP06, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP07.VDID, 0xFFFFFFFF))
            {
                If (LEqual (DSTS, Zero))
                {
                    Notify (\_SB.PCI0.RP07, Zero)
                }
            }

            If (LNotEqual (\_SB.PCI0.RP08.VDID, 0xFFFFFFFF))
            {
                If (LEqual (DSTS, Zero))
                {
                    Notify (\_SB.PCI0.RP08, Zero)
                }
            }

            If (LNotEqual (\_SB.PCI0.RP09.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP09, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP10.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP10, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP11.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP11, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP12.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP12, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP13.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP13, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP14.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP14, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP15.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP15, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP16.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP16, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP17.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP17, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP18.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP18, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP19.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP19, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP20.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP20, Zero)
            }
        }

        If (LOr (LEqual (Arg0, 0x03), LEqual (Arg0, 0x04))) {}
        EV2 (Arg0, Zero)
        If (ECG4 ())
        {
            GENS (0x1C, One, Zero)
        }
        Else
        {
            GENS (0x1C, Zero, Zero)
        }

        If (LEqual (TBTS, One))
        {
            Signal (WFEV)
        }

        Return (Package (0x02)
        {
            Zero,
            Zero
        })
    }
 
ZombieBest said:
So this is the method called from _WAK to (I guess from reading docs) notify all device drivers of the return from sleep state.
The problem is that it's too complicated to understand, too many methods to check. I've tried to search for XHC or something like that, but I really don't know what to check. Do I need to study all the 1000 pages of doc?
Code: 
    Method (RWAK, 1, Serialized)
    {
        P8XH (One, 0xAB)
        ADBG ("_WAK")
        \_SB.PCI0.GEXP.INVC ()
        If (LEqual (S0ID, One))
        {
            Store (One, \_SB.SCGE)
        }

        If (NEXP)
        {
            If (And (OSCC, 0x02))
            {
                \_SB.PCI0.NHPG ()
            }

            If (And (OSCC, 0x04))
            {
                \_SB.PCI0.NPME ()
            }
        }

        If (LEqual (Arg0, 0x03))
        {
            Store (0x0E, SSMP)
        }

        If (LEqual (Arg0, 0x03)) {}
        If (LOr (LEqual (Arg0, 0x03), LEqual (Arg0, 0x04)))
        {
            If (And (GBSX, 0x40))
            {
                \_SB.PCI0.GFX0.IUEH (0x06)
            }

            If (And (GBSX, 0x80))
            {
                \_SB.PCI0.GFX0.IUEH (0x07)
            }

            If (CondRefOf (\_PR.DTSE))
            {
                If (LAnd (\_PR.DTSE, LGreater (TCNT, One)))
                {
                    TRAP (0x02, 0x14)
                }
            }

            OperationRegion (NVID, SystemMemory, 0xE0100000, 0x02)
            Field (NVID, ByteAcc, NoLock, Preserve)
            {
                VVID,   16
            }

            If (LGreaterEqual (OSYS, 0x07D9))
            {
                If (LEqual (VVID, 0x10DE))
                {
                    If (LEqual (NHDA, One))
                    {
                        Store (One, \_SB.PCI0.PEG0.PEGP.MLTF)
                    }
                    Else
                    {
                        Store (Zero, \_SB.PCI0.PEG0.PEGP.MLTF)
                    }
                }
            }

            If (LEqual (TBTS, One))
            {
                Acquire (OSUM, 0xFFFF)
                \_GPE.TINI ()
                Release (OSUM)
            }

            If (LNotEqual (\_SB.PCI0.RP01.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP01, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP02.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP02, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP03.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP03, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP04.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP04, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP05.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP05, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP06.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP06, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP07.VDID, 0xFFFFFFFF))
            {
                If (LEqual (DSTS, Zero))
                {
                    Notify (\_SB.PCI0.RP07, Zero)
                }
            }

            If (LNotEqual (\_SB.PCI0.RP08.VDID, 0xFFFFFFFF))
            {
                If (LEqual (DSTS, Zero))
                {
                    Notify (\_SB.PCI0.RP08, Zero)
                }
            }

            If (LNotEqual (\_SB.PCI0.RP09.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP09, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP10.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP10, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP11.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP11, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP12.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP12, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP13.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP13, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP14.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP14, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP15.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP15, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP16.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP16, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP17.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP17, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP18.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP18, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP19.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP19, Zero)
            }

            If (LNotEqual (\_SB.PCI0.RP20.VDID, 0xFFFFFFFF))
            {
                Notify (\_SB.PCI0.RP20, Zero)
            }
        }

        If (LOr (LEqual (Arg0, 0x03), LEqual (Arg0, 0x04))) {}
        EV2 (Arg0, Zero)
        If (ECG4 ())
        {
            GENS (0x1C, One, Zero)
        }
        Else
        {
            GENS (0x1C, Zero, Zero)
        }

        If (LEqual (TBTS, One))
        {
            Signal (WFEV)
        }

        Return (Package (0x02)
        {
            Zero,
            Zero
        })
    }
Click to expand...

Complex code in _WAK is quite typical.
Reverse engineering is not easy...
 
RehabMan said:
Complex code in _WAK is quite typical.
Reverse engineering is not easy...
Click to expand...
Okay thank you, I will look into that when I have some free time!
Meanwhile if you discover something new about this, please let me know!

Thank you again

Just a question. Are you sure it's not something related to BrcmPatchRAM? Because when I had DW1560 in my laptop BT worked with no issue. I had to replace it because it does not have Channel 13 for WiFi connection (and I need that at work).
So, if that card worked ACPI should be okay, or Am I wrong?
 
Last edited:
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