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Comment by amelius | Hacker News Reader

My startup logic now power-cycles it until the PCI board is recognized; it works, but it's not a great solution.

Interesting, we're using a completely different module (Xavier NX). And the same, disgustingly hacky, fix, of forcing a reset until it works.

I also run these commands:

    echo 1 > /sys/bus/pci/rescan
    sleep 1

Sometimes it brings the PCI card back, so I just run this as part of my boot sequence.