Re: "usb 7-1: reset low speed USB device using uhci_hcd and address 2"

Path	csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From	Clemens Ladisch <clemens@ladisch.de>
Newsgroups	comp.os.linux.hardware
Subject	Re: "usb 7-1: reset low speed USB device using uhci_hcd and address 2"
Date	Thu, 28 Apr 2011 09:44:37 +0200
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Ant wrote:
> Here's the whole dmesg from KNOPPIX liveCD:
> [   14.612931] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   20.818513] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   22.974664] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   26.511687] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   28.707741] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   31.679122] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   40.114035] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   42.180338] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   46.612427] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   49.680232] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   54.654704] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   62.480716] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   64.463835] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   67.049219] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   69.844227] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   79.277358] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   89.652149] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   94.872817] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [   97.062232] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  103.108100] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  114.008620] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  116.387697] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  124.183759] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  130.093198] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  151.614751] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  159.354201] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  164.897676] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  181.125314] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  189.863026] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  198.287969] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  212.765426] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  220.704585] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  223.333203] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  226.407712] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  228.899943] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  231.086014] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  234.935796] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  239.201473] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  243.450576] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  259.398739] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  264.829034] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  269.820114] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  292.173511] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  328.791420] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  351.024955] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  353.221014] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  370.343766] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  378.465890] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  381.101197] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  393.678725] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  404.699026] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  413.905902] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  433.114917] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  436.019723] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  451.412212] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  462.702018] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  468.012513] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  472.431309] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  479.049477] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  483.508131] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  490.518934] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  505.102857] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  506.906330] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  511.571328] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  514.143401] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  516.888492] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  521.649982] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  526.105354] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  541.391366] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  543.713877] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  550.631512] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  553.107087] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  555.832232] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  557.812012] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  560.294241] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  570.406189] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  577.017682] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  581.619455] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  587.688625] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  594.386637] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  600.938226] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  607.060651] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  620.799395] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  631.533556] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  645.668278] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  653.797110] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  656.409120] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  668.930050] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  698.959723] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  715.084235] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  720.348117] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  732.822526] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  768.655149] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  799.909251] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  829.942268] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  840.277108] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  843.261804] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  851.121066] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  858.581075] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  860.727237] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  868.579872] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  882.252097] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  886.833925] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  894.956061] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  897.857542] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  904.013170] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  909.147360] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [  934.831444] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [ 1012.020116] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [ 1019.303808] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [ 1038.076903] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [ 1040.961754] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [ 1088.001000] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [ 1094.046886] usb 7-1: reset low speed USB device using uhci_hcd and address 2
> [ 1105.762590] usb 7-1: reset low speed USB device using uhci_hcd and address 2

There are no other relevant messages that would give a clue about what
is going on.

It appears that this particular device is quite broken and gets reset
more or less regularly.

In practice, only keyboards and mice are low speed devices; have a look
at bus 7 in the output of lsusb (where this device might not appear at
all if it is very broken).


Regards,
Clemens

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Thread

"usb 7-1: reset low speed USB device using uhci_hcd and address 2" ANTant@zimage.com (Ant) - 2011-04-26 13:53 -0500
  Re: "usb 7-1: reset low speed USB device using uhci_hcd and address 2" Clemens Ladisch <clemens@ladisch.de> - 2011-04-27 16:26 +0200
    Re: "usb 7-1: reset low speed USB device using uhci_hcd and address 2" ANTant@zimage.com (Ant) - 2011-04-27 09:51 -0500
    Re: "usb 7-1: reset low speed USB device using uhci_hcd and address 2" ANTant@zimage.com (Ant) - 2011-04-27 15:53 -0500
      Re: "usb 7-1: reset low speed USB device using uhci_hcd and address 2" Clemens Ladisch <clemens@ladisch.de> - 2011-04-28 09:44 +0200
        Re: "usb 7-1: reset low speed USB device using uhci_hcd and address 2" ANTant@zimage.com (Ant) - 2011-04-28 09:49 -0500
        Re: "usb 7-1: reset low speed USB device using uhci_hcd and address 2" Ant <ant@zimage.comANT> - 2011-04-29 11:45 -0700

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