[HELP] HP Probook 450 G1 - Intel HD 4600 - Intermittent and pitched HDMI Audio until enter and exit Sleep once

[gmb]

Hello everyone. I already tried all the possible guides, but I am not able to have working HDMI Audio on Mojave, it is high pitched and messy, however after entering and exiting Sleep once it starts to work (until a reboot or disconnecting/reconnecting HDMI cable). Is there anyone that could help me? This laptop had HDMI audio working on Mavericks.

IOreg report and Efi folder attached.

MAKK’s MacBook Air.zip

EFI.zip

Edited October 17, 2020 by gmb

[gmb]

Yes, you are right, I noticed that too, I also know why that happend, long story... However I did reinstall everything and these attachement should be with everything correct. However the issue is still the same, until entering and exiting sleep the HDMI audio is not working.

 

I tried in 3 different Samsung TVs.

On the 1st: HDMI audio is pitched and intermittent until exiting sleep once

On the 2nd: HDMI audio is not working even if it's shown in the list of available audio devices

On the 3rd: HDMI audio appears briefly when unplugging and replugging the HDMI cable but then disappears from the list of available audio devices.

 

I also attached Library/Extensions folder screenshot

 

I had to remove FakePCIID HDMI Audio to have it work with the sleep workaround, if it is in clover/kext/others or Library/extensions, the HDMI Audio device doesn't appear in the list

 

CLOVER.zip

MAKK.ioreg

Edited October 18, 2020 by gmb