<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>Thanks a lot, that was the problem! Solved<span style="font-family: Verdana, sans-serif, Arial, 'Trebuchet MS'; font-size: 13px; line-height: 1.6em;"> it by using a small hub (in the absence of an extension cord).</span></div>
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<div style="margin:0 0 10px 0;"><b>Gesendet:</b> Freitag, 05. Dezember 2014 um 00:17 Uhr<br/>
<b>Von:</b> "Adam Goode" <adam@spicenitz.org><br/>
<b>An:</b> "MinnowBoard Development and Community Discussion" <elinux-minnowboard@lists.elinux.org><br/>
<b>Betreff:</b> Re: [MinnowBoard] USB issue?</div>
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<div>It is almost certainly this:
<div><a href="http://www.intel.com/content/www/us/en/io/universal-serial-bus/usb3-frequency-interference-paper.html" target="_blank">http://www.intel.com/content/www/us/en/io/universal-serial-bus/usb3-frequency-interference-paper.html</a></div>
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<div class="gmail_quote">On Thu, Dec 4, 2014 at 4:18 PM, Soeren Zorn <span><<a href="ZornS@web.de" target="_parent">ZornS@web.de</a>></span> wrote:
<blockquote class="gmail_quote" style="margin: 0 0 0 0.8ex;border-left: 1.0px rgb(204,204,204) solid;padding-left: 1.0ex;">Hi,<br/>
<br/>
I encountered a small issue with the USB ports. I am running the latest Debian testing version on my MinnowboardMax (dual core version, Rev.A2), with LXDE as GUI. So far so good. Input device is a Logitech K400 keyboard connected by using a Logitech Unifying receiver.<br/>
<br/>
Now about my problem - when I connect an external USB 3.0 hard drive to the USB3.0 port (the lower, blue USB port) with the Unifiying-Receiver connected to the upper USB2.0 port, the keyboard becomes somewhat unresponsive - meaning, I type on the keyboard, and sometimes a letter shows up, but most times not. Same for the keypad input - if I am lucky, the cursor moves, but most of the times, it simply does not. <br/>
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Now comes the funny thing - when I connect the hard drive to the USB2.0 port (top), and the unifying receiver to the lower USB3.0 port, everything works like a charm, besides the fact that the disk transfer speed is limited to USB2.0.<br/>
<br/>
Any ideas what goes wrong? Anything I might have done wrong? I am thankful for any suggestions!<br/>
<span class="HOEnZb"><font color="#888888"> <br/>
Soeren<br/>
<br/>
<br/>
-- <br/>
...and thanks for all the fish (in memory of D. N. Adams)<br/>
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