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[SOLVED] No SOUND! (E7440 A25 - High Sierra)

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Hi Everyone (Esp Jake).

I used the Generic latitude guide with the A21 bootpack by jake for this laptop.

 

but while i originally did have sound, for no reason this has stopped working completely.

It happened a few days ago, and i completely reinstalled, and it worked (after downgrading bios to a21)

but now it is not working also.

 

Here is my EFI Folder attached and also some screenshot of /L/E.

 

Please could you direct me how to fix it?

I used the bootpacks from the guide, Jakes a21 files, and also a small SSDT-XCPM tweak to reduce idle graphics to 200mhz.

 

 

 

CLOVER.zip

Screen Shot 2018-06-28 at 14.34.33.png

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As an update, I followed the debug log guide, and i have also tried reseting permissions and rebuilding the clover efi folder countless times as well as copying over kexts and rebuilding cache (tried to self help before asking).

 

Here are my debug logs, can anyone see anything i am missing?

debug_17106.zip

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Fantastic, Working like a dream now,

 

Here are my boot files for everyone, ->

I have a patch to reduce battery increase battery life by 35% by idling GPU at 200 MHz instead of 550 Mhz.

 

Archive.zip

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what patch?

You mean SSDT-XCPM.aml?

Having PluginType enable and set to 1 in Config file does the same

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Hi Jake.

 

Thanks for the info,

 

I Thought it did the same thing, HOWEVER:

 

Please could you advise:

 

WHen i use the Pike generated SSDT.aml (Attached to this post)

 

I seem to have MUCH MUCH worse battery life, and my Frequency of graphics is stuck at 0.55 (550 Mhz)

 

I have attached the SSDT + the screenshot of the intel Power Gadget.

 

How do I get the BEST battery life for this laptop under High Sierra?

 

 

Thanks Man.

 

(PS: I have read everything about power management. I cannot really understand how to make the best setup for HD4400)

 

 

Screen Shot 2018-06-30 at 19.32.33.png

SSDT.aml.zip

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