I'm running OP on a Pi 3. Openplotter is a superb system that (mostly) behaves as I expect.
However, I'm just adding a SDR for AIS and I acquired a USB hub
http://www.ebay.co.uk/itm/7-Port-USB-2-0...1113231746
plus a 12v -> 5v converter to power it. However, the PI is only able to recognise devices attached to the hub if I feed the upstream USB through an unpowered USB2.0 hub before the pi.
i.e. This works...
But this doesn't
I've tried swapping the cable (A to B) that came with it but it'no better.
dmesg shows errors along the lines of
However, I'm just adding a SDR for AIS and I acquired a USB hub
http://www.ebay.co.uk/itm/7-Port-USB-2-0...1113231746
plus a 12v -> 5v converter to power it. However, the PI is only able to recognise devices attached to the hub if I feed the upstream USB through an unpowered USB2.0 hub before the pi.
i.e. This works...
Quote:PI <---> USB2.0 hub <---> Powered USB hub <---> Device
But this doesn't
Quote:PI <---> Powered USB hub <---> Device
I've tried swapping the cable (A to B) that came with it but it'no better.
dmesg shows errors along the lines of
Quote:device not accepting address 14, error -32And it obviously fails to enumerate the device. I'm suspicious that the supplied USBB <---> USBA cable is at fault and the Pi doesn;t like it for some reason, but I have swapped it for two other cable with the same results. What else can be wrong?