Dell E5430 HD 4000 glitches/artefacts even using WEG and framebuffer patching

[Stacey]

Hello, I have a Dell Latitude E5430 non-vPro (8GB RAM/SSD WDGREEN 240GB/i3-3110M) with Catalina installed on it, I'm using OpenCore for this. Almost everything is working, but I'm having problems with the HD 4000 (1366x768) video card. I followed the entire tutorial in the WEG documentation for my video card model and I even did the framebuffer patching, I also did the SSDT and DSDT patching, but this video card continues to present some problems, the biggest of them are glitches and artifacts on the screen when the system is on.

 

I recorded some videos showing this:

Boot glitch: https://streamable.com/pksh89 (It used to be worse, somehow the glitches reduced.)

Shutdown/reboot glitch: https://streamable.com/nsl3vd

 

System on: https://streamable.com/bsjkt9 (glitches on the bar)

 

My current kexts (all updated):

• ACPIKeyboard.kext
• AppleALC.kext
• BrcmFirmwareData.kext
• BrcmPatchRAM3.kext
• BCM5722D.kext
• Lilu.kext
• SMCBatteryManager.kext
• SMCProcessor.kext
• VirtualSMC.kext
• VoodooPS2Controller.kext
• WhateverGreen.kext

RunMe.zip

[Hervé]

Startup and shutdown glitches, you'll have to live with. They're totally negligible and can be ignored.

 

For the other stuff you've filmed, you may try the Capri framebuffer memory size reduction from 16 MB to 8MB. I could not see any Capri FB patching in your OC config so no idea which patches your meant above...

[Stacey]

Thank you for answering. I really don't care about the glitches in the boot

 

Where can I make this change, in config.plist?

[Hervé]

The FB mem. size patch is detailed in our HD4000 patching guide In the R&D->Graphics forum subsection. You can look it up. I've never used OC myself but you would implement the patch either as a property injection  under DeviceProperties (may be difficult for you) or as a kext patch under Kernel->Patch (you have existing patches you can refer to).

[Jake Lo]

@bebetoalves

You incorrectly added the injection for graphics. Try this config. Fixed injection and added the patch Hervé mentioned

config.plist.zip

[Stacey]

Thank you very much. This solved my problem, only now have glitch at boot but this can be ignored.