Reply To: Diagnostic query: Unexpected kernel panic on macOS Sequoia 15.1 after waking (1794703853)

The AppleThunderboltNHI assertion alongside IOPlatformPluginFamily strongly indicates a Thunderbolt/USB4 path state machine failure during the D3cold-to-D0 transition, likely triggered by the dock’s DisplayPort MST hub failing to re-enumerate link training within the IOPCIDevice resume latency budget. Verify the dock’s PD controller firmware via system_profiler SPThunderboltDataType | grep -A 5 "Firmware Version" and cross-reference against the vendor’s Sequoia 15.1 compatibility matrix; a forced pmset -a tcpkeepalive 0 and hibernatemode 25 test isolates whether the panic persists in deep hibernation versus standard sleep. If the call stack shows IOThunderboltController::handleInterrupt timing out, disable “Wake for network access” and test with a direct-attach TB4 cable bypassing the dock’s upstream port to rule out retimer signal integrity degradation.