[macOS] OpenCore - unable to set Full HD resolution

[giaur500]

Describe the Issue

I mounted OpenCore.qcow2, then tried to edit config.plist to set correct screen resolution for MacOS guest os (1920x1080) in my case. But there's no any screen reslution section in that file anymore.

What is preffered way to change resolution to 1080p?

Reproduce the Issue

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Expectation

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Screenshots

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Operating System

Mint/LMDE

Kernel

6.5

Processor

i7-13700

RAM (in GB)

32

GPU(s)

Intel

Version

0.12.2

Branch

main

Generated Script File

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Generated XML File (if applicable)

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Generated Log File

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Additional Information

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[Coopydood]

Hi, are you using GPU pass through?

[giaur500]

No, software rendering with virtual gpu. I tried other tools to run macos on kvm, it was alwas possible to set resolution by editing config.plist. But your OpenCore version does not include this setting.

I'm not able to use GPU passthrough unfortunately. I guess that's OpenCore issue, but do you know any way how to change resolution? Either make possible to choose on guest (MacOS settings), or force screen resolution with OpenCore.

BTW You boot.sh file includes SCREEN_RES env variable, but it's not used anywhere inside the script. Maybe, it can be passed somewhere?

[Coopydood]

Hi, that variable is for internal use (I.e read by other scripts).

To change the screen resolution you have a couple options:

1. Copy a new OVMF from the resource store; in the main repo directory, run

   cp ./resources/ovmf/OVMF_VARS_1920x1080.fd ./ovmf/OVMF_VARS.fd

   replacing 1920x1080 with the supported resolution you need.

2. You can add the resolution property to config.plist yourself. The reason you can't find it is simply because it is NOT set to anything. If you want an easy way to change it then perhaps try OpenCore configurator from within macOS. I believe it's in UEFI > Output. The reason it's not set to anything is so that it inherits the resolution used by the virtual BIOS - determined by that OVMF file - which is user selected during autopilot.

Hope this helps. If you need anything else give me a shout, or join the discord.

Cheers

[giaur500]

Thanks, I will try and report here if I get any problems. I think easiest way is to use correct OVMF_VARS

[giaur500]

Ok, it works with new .fd file. But you meant OVMF_DIR, not boot, it's set by default to /ovmf. I replaced existing file with the one called 1080p and guest is 1080p now. Thanks for a tip.