Running OPNsense on the HP T740 — Fixing GIANT-LOCKED and Power Recovery Issues
The article addresses the “GIANT-LOCKED” boot issue and power recovery problems encountered when using OPNsense on HP T740 thin clients. The root cause lies in the legacy device probing by FreeBSD’s firmware, which can lead to system freezes and improper resets following a power cut. Solutions involve modifying the boot loader configuration to disable legacy device probing and manage ACPI settings, ensuring reliable system operation without external peripherals.
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