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After the shared display is selected, DisplayMux automatically reads and saves the input port currently used by that computer. Manual setup is normally unnecessary.
When another configured DisplayMux host is added, its detected port is filled in automatically if pairing succeeds and both computers use the same shared display.
Interface improvements
Input menus now use familiar names such as VGA, DVI, DP, HDMI 1, HDMI 2, and Type-C instead of exposing technical VCP values.
DisplayMux prefers the inputs advertised by the monitor and lists only ports that have not already been assigned to another host.
Updated the in-app help and bilingual README files with real interface screenshots, and added an MIT License.
Safety and compatibility
Input detection only reads monitor information and does not cycle through ports, preventing detection-related black screens.
Before accepting a remote host's port automatically, DisplayMux verifies the pairing password, complete monitor identity, supported inputs, and whether the port is already assigned. Manual selection remains available when the port cannot be verified safely.
If the monitor, hub, dock, or adapter cannot provide an input list, DisplayMux falls back to a compact set of common ports.
Known limitations
Some monitors use vendor-specific values for Type-C or other inputs. Values that cannot be identified reliably are shown as Other Input.
The macOS DMG is ad-hoc signed but not notarized with an Apple Developer ID, so Gatekeeper may require manual approval.
Some MST, DisplayLink, and Silicon Motion docks do not forward DDC/CI. Software cannot restore control signals that the hardware does not expose.