Two computers, one monitor, zero fiddling
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A practical guide to switching between a Mac laptop and Linux desktop using a single monitor, keyboard, and mouse without touching any cables. The setup uses a monitor with built-in KVM (MSI MPG 321URX) combined with DDC commands sent over the display cable. On macOS, m1ddc and Hammerspoon bind a keyboard shortcut to switch inputs; on Linux, ddcutil with KDE's shortcut manager achieves the same. The result is seamless input switching triggered entirely from the keyboard.
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