Ok I follow now. Can you either recommend a keyboard that does not require a hub or a powered hub that will facilitate my existing keyboards?itimpi wrote:No - the problem is that the USB ports on the Pi are limited to 140 mV. You need to either use a keyboard that does not need more power than that, or connect it via a powered hub.
You said the keyboard had a USB hub? If that is the case I would definitely expect it to draw more power than the Pi supplies. The Pi cannot power another USB hub.spadge_2356 wrote:I don't think it's a power issue. On the bottom of the keyboard it says 5V 75mA, so it should be adequet? I got a kernel panic message earlier too.
Any other ideas?
This is a quote from the link to the thread above from adrian.oconnor "When arch boots, it shows an error about device eth0 not being found." I too get this problem. I haven't broke out the multimeter yet to test the board but I'm afraid that I might not have to at this point! I really hope I don't have to send this back to RS!Bigally wrote:Others are having the same problem it is not a power supply problem please read http://www.raspberrypi.org/phpBB3/viewt ... =28&t=8387
The most recent batch of Pis or at least some of them, seem to have a problem with the USB ports which may be linked to poor soldering on X1. No number of powered hubs seem to solve it, I know I've tried and swapped peripherals with a known working Pi.
This is a very generic Chinese hub, low quality and unknown compliance with USB standards. I have one just like it and it's a complete non-starter with my setup. Came with a 1A PSU that is as light as a feather but again of obvious low quality.spadge_2356 wrote:bought this hub off ebay
I have several of those - came with 2A PSU - which work fine for me ...El_Presidente wrote:This is a very generic Chinese hub, low quality and unknown compliance with USB standards. I have one just like it and it's a complete non-starter with my setup. Came with a 1A PSU that is as light as a feather but again of obvious low quality.spadge_2356 wrote:bought this hub off ebay
Can't see it working for you, but you never know. I'll look out for your reply!
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