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HP 840 G3 internal speaker not work, headphone works

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I'm a newbie on this, not sure if this's the link you're refering:
https://github.com/RehabMan/HP-ProBook-4x30s-DSDT-Patch/tree/archive/Resources_ProBook

Yes. Or clone the repo, then switch to archive branch (git checkout archive).

my model is CX20724, not sure:
1.which plist I should use (layout5 or layout7 ?)

Put both into AppleALC with unique layout-id values.

2.how to "importing the XML"

For that, you need to read the AppleALC wiki.
 
Hi @xworm, did you manage to make the internal speaker work?
 
I followed below link:

and internal speaker finally worked!

All post installation process is same as what I did before. The most possible reason is the BIOS setting, and the driver64UEFI content of Clover.
 
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