Is there anything useful I can do with respect to further testing either the OHCI or ACPI drivers?
The only thing that comes to mind is forwarding the relevant /sys/class/usb_host/$BUSNUM/registers file(s), maybe they'll show something. If the hub driver can't enable those ports, I'm not sure what would go wrong.
There's an experiment you could try, but I suspect it won't change anything. "modprobe ohci-hcd power_switching" can help on some hardware that's wired for it. Some hosts are, some aren't. I've got a device that doesn't respond to USB reset correctly, it needs to see USB power up/down or it won't appear at boot time ... which means it's got to be on an external hub, or on an appropriate root hub.
- Dave
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