please check if the USB cable is shielded. try the best shielded, thickest USB you can find and report whether or not you can reproduce the effect.<br><br><div class="gmail_quote">2010/1/31 Jon Meek <span dir="ltr"><<a href="mailto:meekjt@gmail.com">meekjt@gmail.com</a>></span><br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">That is certainly possible since the error message suggested EMI<br>
(Electromagnetic Interference):<br>
<div class="im"><br>
[25498.971441] hub 2-0:1.0: port 1 disabled by hub (EMI?), re-enabling...<br>
<br>
</div><div><div></div><div class="h5">On Sat, Jan 30, 2010 at 9:29 PM, Johann Wolfgang Goethe<br>
<<a href="mailto:jgoethe@gmail.com">jgoethe@gmail.com</a>> wrote:<br>
> hello,<br>
><br>
> in november i asked for some help with my logitech z-5 loudspeakers<br>
> and voyage linux.<br>
> i had the problem that the usb device was disconnected from the bus. i<br>
> didn't use the alix 2c2 board since than. today i brought the board<br>
> and the speakers from my livingroom to work. since than it didn't<br>
> disconnect the usb speakers anymore. the only difference i can see is<br>
> that in my livingroot i had a basestation from my dect telefon near to<br>
> it.<br>
> could it be possible that the disconnect has something todo with the<br>
> dect phone next to it?<br>
><br>
> thank you very much in advance for your help.<br>
><br>
> [25388.082748] generic-usb 0003:046D:0A13.004E: input: USB HID v1.00<br>
> Device [Logitech Logitech Z-5 Speakers] on usb-0000:00:0f.4-1/input2<br>
> [25436.251122] hub 2-0:1.0: port 1 disabled by hub (EMI?), re-enabling...<br>
> [25436.252040] usb 2-1: USB disconnect, address 79<br>
> [25436.467851] usb 2-1: new full speed USB device using ohci_hcd and address 80<br>
> [25436.605078] usb 2-1: configuration #1 chosen from 1 choice<br>
> [25436.676864] input: Logitech Logitech Z-5 Speakers as /class/input/input79<br>
> [25436.677838] generic-usb 0003:046D:0A13.004F: input: USB HID v1.00<br>
> Device [Logitech Logitech Z-5 Speakers] on usb-0000:00:0f.4-1/input2<br>
> [25498.971441] hub 2-0:1.0: port 1 disabled by hub (EMI?), re-enabling...<br>
> [25498.972359] usb 2-1: USB disconnect, address 80<br>
> [25499.188171] usb 2-1: new full speed USB device using ohci_hcd and address 81<br>
> [25499.325339] usb 2-1: configuration #1 chosen from 1 choice<br>
> [25499.397019] input: Logitech Logitech Z-5 Speakers as /class/input/input80<br>
> [25499.397180] generic-usb 0003:046D:0A13.0050: input: USB HID v1.00<br>
> Device [Logitech Logitech Z-5 Speakers] on usb-0000:00:0f.4-1/input2<br>
><br>
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