Random reboots on laptop 'HP EliteBook 840r G4' (Monterey)

[Daniel Andersson]

Hi! I got a 'HP EliteBook 840r G4' notebook and I managed to install 'Olarila Monterey 12.3' on it with OpenCore.

After a few tweaks everything works. That is audio, wifi, graphics, bluetooth and so on.

However I still got this error, the laptop decides to shutdown and reboot randomly.

The reboots seem to be somewhat random. But if I play a 4K video on YouTube for a while it always freezes up and reboots within seconds. Anyone know what could be wrong here?

EFI:

https://www.transfernow.net/dl/20220318paWeCNHG

 

 

 

Edited March 18, 2022 by Daniel Andersson

[Daniel Andersson]

Okay so I found what caused the kernel panic on Monterey 12.3.

It was the 'itlwm.kext'. Apparently, Monterey 12.3 and ‘Ethernet l225V’ causes crashes. Itlwm spoofed the Wi-Fi as an Ethernet device, maybe that’s the problem. I tried to add boot-arg ‘e1000=0’ , but that did not work. I uninstalled the 'itlwm.kext' and only use my ethernet for now. 

[MaLd0n]

use AirportItlwm instead

[Daniel Andersson]

9 hours ago, MaLd0n said:

use AirportItlwm instead

Does it work in Monterey 12.3? I thought it maybe got the same problem:

 

Edited March 19, 2022 by Daniel Andersson

[MaLd0n]

yes. work

https://github.com/OpenIntelWireless/itlwm/releases/tag/v2.1.0

[Daniel Andersson]

Thanks! 

AirportItlwm.kext actually do seem to be working on this HP Elitebook with Monterey 12.3.

If there’s anyone in a similar situation just also remember update to the latest OpenCore version and do this change in config.plist:

Root -> Misc -> Security -> SecureBootModel (type:String, value “Default”)