[Dell Vostro 3558]Mojave 10.14.1 Realtek ALC 255 No audio/Synaptics I2C Touchpad

[RehabMan]

sorry. don't know where it went wrong. I updated my main specs.

Now you can remove the laptop from the signature.

I updated my profile. (Added laptop info in other hardware section)

Funny thing is, sometimes after restart, it just works I don't know why. It looks like something shuts it down on login or something like that... Haven't changed a thing... All working, and then after next reboot the sound is gone again.

I tried following things:

I have built and replaced AppleALC.kext from the source.
then I tried patching DSDT with inject layout-3 and IRQ fix patch. But still no luck.
I returned HDAS -> HDEF in config.plist

Any other ideas?
p.s I uploaded fresh debug dump

Try injecting fake device-id on HDEF.
For example, device-id=(data)<70a10000>.
You can do it in config.plist/Devices/Properties/PciRoot(0)/Pci(0x1f,3)

 

[click0230]

Now you can remove the laptop from the signature.


Try injecting fake device-id on HDEF.
For example, device-id=(data)<70a10000>.
You can do it in config.plist/Devices/Properties/PciRoot(0)/Pci(0x1f,3)

Removed.

It works!
Thank you very much sir!

P.S
Just from curiosity, do you know why it worked sometimes?

 

[RehabMan]

Just from curiosity, do you know why it worked sometimes?

The fix in AppleALC, just like a similar fix I implemented in FakePCIID_Intel_HDMI_Audio.kext, is not reliable.
Fortunately, injecting a fake device-id is reliable and even much simpler.

 

[click0230]

The fix in AppleALC, just like a similar fix I implemented in FakePCIID_Intel_HDMI_Audio.kext, is not reliable.
Fortunately, injecting a fake device-id is reliable and even much simpler.

Oh, ok. Thanks

 

[click0230]

@RehabMan , the sound is gone again.
I haven't changed a thing. I tried putting FakePCIID and FakePCIID_Intel_HDMI_Audio.kext (although I don't have HDMI)
CodecCommander, but no luck. It just won't start again...
Is there any other thing I could try?
Sorry and thanks in advance.
EDIT: uploaded debug.zip
Will it make any difference if I install High Sierra?
Should hda-gfx "onboard-1" , "no-controller-patch" be uncommented in devices -> properties?

 

[RehabMan]

@RehabMan , the sound is gone again.
I haven't changed a thing. I tried putting FakePCIID and FakePCIID_Intel_HDMI_Audio.kext (although I don't have HDMI)
CodecCommander, but no luck. It just won't start again...
Is there any other thing I could try?
Sorry and thanks in advance.
EDIT: uploaded debug.zip
Will it make any difference if I install High Sierra?
Should hda-gfx "onboard-1" , "no-controller-patch" be uncommented in devices -> properties?

Your ioreg shows obvious SMBIOS truncation.
You need config.plist/KernelAndKextPatches/DellSMBIOSPatch=true

Try injecting compatible=(data)"pci8086,a170" on HDEF, similar to how you're injecting device-id.

 

[click0230]

Try injecting compatible=(data)"pci8086,a170" on HDEF, similar to how you're injecting device-id.

Sorry, I don't know how/where. Is there a tut somewhere?

 

[RehabMan]

Sorry, I don't know how/where. Is there a tut somewhere?

Using Xcode it would look like this:

 

[click0230]

Using Xcode it would look like this:
View attachment 373277

I tried it.. No luck.
One silly question. I am using this laptop at work, with external mouse, keyboard, and second monitor attached on VGA.
Could it be that something of those three causing this problem?
EDIT: Added debug.zip

 

[RehabMan]

I tried it.. No luck.

Luck is not a factor.
Try also injecting IOName=(string)"pci8086,a170"