KVM switches are often slow and/or buggy and/or expensive. Plus, looking glass is more flexible since you can display both OSs at the same time. As a sibling c

KVM switches are often slow and/or buggy and/or expensive. Plus, looking glass is more flexible since you can display both OSs at the same time. As a sibling comment stated, you can get a dummy monitor plug on Amazon for like $5 which fools your GPU into thinking there's a monitor attached.