Broadwell HDMI Audio Issue

lisai9093 · Jul 3, 2015

I've done DSDT patch (HDAU, IGPU, HDEF) and BDWframbuffer.kext binary patch but still no HDMI audio.

I think the problem is in fb binary patch, which I just change DP port to HDMI port for 0x5 and 0x4 index, but not sure if it is done correctly. Here are my ioreg and screen shot from DPCImanager. Any help is appreciated.

toleda · Jul 3, 2015

lisai9093 said:
I've done DSDT patch (HDAU, IGPU, HDEF) and BDWframbuffer.kext binary patch but still no HDMI audio.

DPCImanager screenshot does not match the IOReg.
Attach the HDMI audio edited dsdt or ssdt.

lisai9093 · Jul 3, 2015

toleda said:
DPCImanager screenshot does not match the IOReg.
Attach the HDMI audio edited dsdt or ssdt.

oops, sorry I changed ig-platform-id several times while testing hdmi audio....

Here is my current dsdt, ioreg when connected to hdmi. Thx!

toleda · Jul 3, 2015

lisai9093 said:
current dsdt, ioreg when connected to hdmi. Thx!

What is the HDMI device?
IOReg, shows device removed and device does not support HDMI audio. Framebuffer shows HDMI connector.
Make the following dsdt edits:
1. Add to Device (HDEF)

Code:

        Method (_DSM, 4, Serialized)  // _DSM: Device-Specific Method
        {

            If (LEqual (Arg2, Zero))
            {
                Return (Buffer (One)
                {
                     0x03
                })
            }

            Return (Package (0x04)
            {
                "layout-id", 
                Buffer (0x04)
                {
                     0x03, 0x00, 0x00, 0x00
                }, 

                "PinConfigurations", 
                Buffer (Zero) {}
            })
        }

2. Remove:

Code:

    Scope (_SB.PCI0.HDEF)
    {
        Method (_DSM, 4, Serialized)  // _DSM: Device-Specific Method
        {
            Name (_T_0, Zero)  // _T_x: Emitted by ASL Compiler
            If (LEqual (Arg0, Buffer (0x10)
                    {
                        /* 0000 */   0x8D, 0xD9, 0xC5, 0xC5, 0x0E, 0x36, 0xAF, 0x43,
                        /* 0008 */   0xB7, 0xC1, 0x3E, 0xDE, 0x8F, 0x66, 0x9A, 0xD3
                    }))
            {
                ADBG ("Audio Player call")
                While (One)
                {
                    Store (Arg2, _T_0)
                    If (LEqual (_T_0, Zero))
                    {
                        If (LEqual (Arg1, Zero))
                        {
                            Return (Buffer (One)
                            {
                                 0x03
                            })
                        }
                        Else
                        {
                            Return (Buffer (One)
                            {
                                 0x00
                            })
                        }
                    }
                    Else
                    {
                        If (LEqual (_T_0, One))
                        {
                            If (LEqual (DerefOf (Index (Arg3, Zero)), Zero))
                            {
                                ADBG ("Audio not active")
                                Store (Zero, VBOK)
                            }
                            Else
                            {
                                ADBG ("Audio is active")
                                Store (One, VBOK)
                            }
                        }
                    }

                    Break
                }
            }

            If (LEqual (Arg2, Zero))
            {
                Return (Buffer (One)
                {
                     0x03
                })
            }

            Return (Package (0x06)
            {
                "layout-id", 
                Buffer (0x04)
                {
                     0x03, 0x00, 0x00, 0x00
                }, 

                "hda-gfx", 
                Buffer (0x0A)
                {
                    "onboard-1"
                }, 

                "PinConfigurations", 
                Buffer (Zero) {}
            })
        }
    }

Reply with edited dsdt and new IOReg.

lisai9093 · Jul 4, 2015

OK, here is the updated DSDT&ioreg. Still no HDMI audio.

toleda · Jul 4, 2015

lisai9093 said:
OK, here is the updated DSDT&ioreg. Still no HDMI audio.

Try AAPL,ig-platform-id = 0x00, 0x00, 0x16, 0x16 with appropriate framebuffer patch

lisai9093 · Jul 5, 2015

toleda said:
Try AAPL,ig-platform-id = 0x00, 0x00, 0x16, 0x16 with appropriate framebuffer patch

still no success.....

toleda · Jul 5, 2015

lisai9093 said:
still no success.....

Install native AppleHDA.kext. Reply with new IOReg.

Machanical · Aug 8, 2015

Any further news on this one? I have this issue myself on my HD5500. Been trying out a bunch of different framebuffer patches on port 0x1616002 like patching both DPs to HDMI (causes the HDMI port to not work anymore). Also tried changing the DP's connector to 8 instead of 4, but no audio.

I've also tried Toleda's SSDT for HD5500 from the Intel 9 repo. No dice.

I've included a zip with the audio codec dump from Linux for both the Conexant and Intel HDMI codecs, an ioreg -l without any framebuffer patches (I know everyone probably wanted a IORegistryExplorer one, but I don't want my real name here), a DSDT, and all the SSDTs in .dsl format for easy access without disassembly.

As for the SSDTs, "SSDT-5" and "SSDT-8" are interesting since they contain information about the IGPU, B0D4, PEGP, PEG1 etc... The rest aren't very interesting, but are included just in case.

Thank you for any hints to solving this one.

toleda · Aug 8, 2015

Machanical said:
tried Toleda's SSDT for HD5500 from the Intel 9 repo. No dice.

IOReg.txt is useless. No support for Conexant codec.
Did you edit the dsdt for IGPU? if yes, disabled HD5500 ssdt.
See Problem Reporting, Post #1, HDMI Audio AppleHDA. Post to same thread as the guide.

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