[quoted lines by Lars Bjørndal on 2016/04/26 at 10:43 +0200] >I've tried the device and the cable with another computer, and had no >problem. The USB port on the rpi is working ok for other devices, like >wifi/bluetooth controllers and wired keyboard. Right now, I'm using a >Handy Tech Modular Evolution 88, and that too works fine with the rpi.
Yes, all of that seems to indicate that the ports, cable, device, and rpi are all okay. >Could it be a problem with displays that consume power from the USB >port? The Active Braille reports it uses USB power when connected. With an rpi >and a >charging bank, there may be limitations, maybe? I don't know. Perhaps. Can the HT AB be configured to not request power from the port? You're getting three errors: ETIMEOUT (for an output operation not being confirmed within one second) EPROTO (USB protocol error) ENODEV (the USB device has disappeared) I suppose it's possible, if right near a limit, that the device is switching between getting and not getting power. Are other devices drawing power from the rpi's USB? If so, what happens if you disconnect them? -- Dave Mielke | 2213 Fox Crescent | The Bible is the very Word of God. Phone: 1-613-726-0014 | Ottawa, Ontario | http://Mielke.cc/bible/ EMail: d...@mielke.cc | Canada K2A 1H7 | http://FamilyRadio.org/ _______________________________________________ This message was sent via the BRLTTY mailing list. To post a message, send an e-mail to: BRLTTY@mielke.cc For general information, go to: http://mielke.cc/mailman/listinfo/brltty
