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.
2010/1/31 Jon Meek <[email protected]> > That is certainly possible since the error message suggested EMI > (Electromagnetic Interference): > > [25498.971441] hub 2-0:1.0: port 1 disabled by hub (EMI?), re-enabling... > > On Sat, Jan 30, 2010 at 9:29 PM, Johann Wolfgang Goethe > <[email protected]> wrote: > > hello, > > > > in november i asked for some help with my logitech z-5 loudspeakers > > and voyage linux. > > i had the problem that the usb device was disconnected from the bus. i > > didn't use the alix 2c2 board since than. today i brought the board > > and the speakers from my livingroom to work. since than it didn't > > disconnect the usb speakers anymore. the only difference i can see is > > that in my livingroot i had a basestation from my dect telefon near to > > it. > > could it be possible that the disconnect has something todo with the > > dect phone next to it? > > > > thank you very much in advance for your help. > > > > [25388.082748] generic-usb 0003:046D:0A13.004E: input: USB HID v1.00 > > Device [Logitech Logitech Z-5 Speakers] on usb-0000:00:0f.4-1/input2 > > [25436.251122] hub 2-0:1.0: port 1 disabled by hub (EMI?), re-enabling... > > [25436.252040] usb 2-1: USB disconnect, address 79 > > [25436.467851] usb 2-1: new full speed USB device using ohci_hcd and > address 80 > > [25436.605078] usb 2-1: configuration #1 chosen from 1 choice > > [25436.676864] input: Logitech Logitech Z-5 Speakers as > /class/input/input79 > > [25436.677838] generic-usb 0003:046D:0A13.004F: input: USB HID v1.00 > > Device [Logitech Logitech Z-5 Speakers] on usb-0000:00:0f.4-1/input2 > > [25498.971441] hub 2-0:1.0: port 1 disabled by hub (EMI?), re-enabling... > > [25498.972359] usb 2-1: USB disconnect, address 80 > > [25499.188171] usb 2-1: new full speed USB device using ohci_hcd and > address 81 > > [25499.325339] usb 2-1: configuration #1 chosen from 1 choice > > [25499.397019] input: Logitech Logitech Z-5 Speakers as > /class/input/input80 > > [25499.397180] generic-usb 0003:046D:0A13.0050: input: USB HID v1.00 > > Device [Logitech Logitech Z-5 Speakers] on usb-0000:00:0f.4-1/input2 > > > > _______________________________________________ > > Voyage-linux mailing list > > [email protected] > > http://list.voyage.hk/mailman/listinfo/voyage-linux > > > > _______________________________________________ > Voyage-linux mailing list > [email protected] > http://list.voyage.hk/mailman/listinfo/voyage-linux >
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