[arch-general] Disable auto-detection of a specific monitor

Hello, I'd like to know if there's a possibility to disable the auto-detection of a specific monitor / output. I explain my case, i have three monitor & a KVM PCI-Passthrough setup for gaming. When i start my vm i turn off my principal monitor via a libvirtd hook and it switch to windows. My second screen have a KVM switch between arch GPU & Windows GPU Third screen only on arch. When i switch the KVM for the second screen, Xorg re-detect my primary screen and turn it On, but i can't see all my windows because the monitor is still switched on the Windows GPU. My arch GPU is a GTX980 running on proprietary drivers. Thank you Have a good day.