Recognition Display Link-Flap Detection Checklist for Reliable School Kiosks
Intent: decide — A lobby kiosk that shows championship banners in the morning and a blank screen at noon has not lost power and is not running buggy software. It has experienced a link-flap event: its Ethernet port cycled between connected and disconnected — possibly dozens of times in a few seconds — disrupting every active TCP session, clearing the local ARP cache, and forcing the content management system to close and reopen its delivery connection. The display comes back on its own, the content catches up, and the problem looks like a glitch. It happens again three days later. It happens again during senior night. Each event is brief, each recovery looks clean, and none of them generate a support ticket specific enough to diagnose.
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