Dell Latitude 7300: bad audio with ALC295 / ALC3254

[Cropester]

Can someone help me fix the Audio (bad sound). The fix in this post has not changed anything at all for me. 
https://osxlatitude.com/forums/topic/18136-solved-dell-latitude-7300-bluetooth-dw1830-and-audio-jack-problems/

 

Intel i7-8665U

Realtek ALC3254 audio

Intel Wireless-AC 9560 160MHz

13.3" FHD 1920x1080 LCD

Intel Cannon Point-LP PCH - USB 3.1 xHCI Host Controller

Intel Cannon Point-LP, Intel Whiskey Lake-U chipset

I have installed ALCPlugFix-Swift and added the edited sample.plist.

Then I added "alcverbs=1 alcid=77" to the boot args.  and rebooted the device. 

Do I have to delete/edit my audio device in the "Device Properties" under "Devices" to get this work?

 

Here is my EFI:

https://mega.nz/file/OQIXBJib#aBZ-m8NzIPAEOjHF5g3QRzad9SzBQJkj0FM21iumteg

(I have removed the boot args again after I noticed that it has no effect.)

[Hervé]

No, you do not delete/remove the audio device properties your inject in your OC config. Did you reset NVRAM after applying the ALC fix and adjusting your OC config with the boot args?

 

2 comments on your OC config by the way:

1. you should avoid injecting your audio layout id in the audio device properties section and as a boot-arg. It's Ok as long as they're both the same but if you start experimenting with different ids, well...
2. you're running Big Sur so you should be disabling SIP with csr-active-config value 0xFEF, not 0xFFF; latter will prevent you from getting OS updates. See our FAQ topic on disabling SIP for details.