How to set vagrant virtualbox video memory

You’ll need to use the following config:

config.vm.provider "virtualbox" do |v|
   v.customize ["modifyvm", :id, "--vram", "<vramsize in MB>"]
end

How I found this?
I looked at VirtualBox docs but haven’t found anything about ‘Video’ or ‘Memory’ that seem related to video memory.
So I ran VBoxManage showvminfo <vm name> command and looked for the line with the amount of video memory I have set in Virtualbox GUI (12MB).

And then I saw:

VRAM size:       12MB

So now back to the documentation looking for ‘vram’ string.

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