USB Hub

[LJHerskowitz]

I recently had trouble with a keyboard/touchpad combination with my cRIO-9030. That was resolved by getting a Linux compatible keyboard/touchpad which worked when plugged directly into the cRIO. However, if I plug it into a USB hub the touchpad does not work. The keyboard works and the cRIO can read USB thumb drives just fine. But the touchpad works. I have tried three different USB hubs

http://www.digitus.info/en/products/accessories/usb-hubs/r-slim-spider-usb-hub-da-70216

http://www.amazon.com/AmazonBasics-4-Port-USB-2-0-Ultra-Mini/dp/B003M0NURK

I used the 2.0 and the 3.0 on the amazon basics port.

The touchpad did not work on any of them. Has anyone seen this issue?

[BradM]

One thing I noted is that none of the hubs listed are separately powered: all depend on the bus power from the host port. It's not unexpected that the touchpad could require more than 100mA and therefore be unusable on a bus-powered hub. Try to dig up a self-powered hub and check

[LJHerskowitz]

The USB 3.0 is externally powered if that is what you mean.

[BradM]

So it is, I missed that you'd mentioned the Amazon Basics was both the 2.0 and 3.0 versions. When plugging/unplugging the touchpad from the hub, do you see any information in the kernel logs?

Check with dmesg | tail shortly after plugging the touchpad into the hub.