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Looking to migrate
(suppo.fi)
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this post was submitted on 21 Sep 2023
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If you're doing GPU passthrough, then you'd have a dedicated monitor on the iGPU just for managing VMs, and you'd have a second monitor hooked up to the dGPU and it would initialize with the VM bootup. If what you're trying to do is just get multiple monitors on a linux install, then you should just disable the iGPU and don't plug anything into it at all, and only use nVidia driver stack for your setup.
I don't know what problem you're trying to solve exactly. Are you looking to do GPU passthrough on VMs, or are you just trying to get a standard multi-monitor setup on a gaming PC? What, exactly?
iGPU shares one monitor with the dGPU, but on different protocol, which from what I read online is supported.
It only really needs output when I flick it open.
So maybe it needs a KVM switch instead of trusting the monitors splits.
It's possible you need a dedicated KVM for swapping the input of the iGPU/dGPU shared monitor. If the dGPU is only getting passed through to a VM, I don't believe it will initialize until the VM explicitly takes control of it.
And I think vGPU passthrough is disabled on consumer Ada/Ampere architectures unless there's been a crack developed for it since then?
The turing architecture (RTX 20 series) is the only one I know of that has a crack/drivers available for it but I may be wrong/out of date on that info.