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[Mörgæs <369190@xxxxxxxxxxxxxxxxxx>]

Closing due to age.
If a similar bug appears in 15.10 please open a new report.

** Changed in: modemmanager (Ubuntu)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/369190

Title:
  USB regression from 2.6.24-23-generic with USB GSM-modem

Status in modemmanager package in Ubuntu:
  Invalid

Bug description:
  Kubuntu version information: just upgraded to 9.04 from 8.04.

  USB device in question is "Siemens ES75" modem; cannot lsusb yet as
  I'm currently under 2.6.28-11 and by mistake left the modem connected
  while booting.

  Under 2.6.24-{19, 21, 22, 23}-generic:
  ===========================

   1. Connect usb modem
   2. dmesg shows new device, loads cdc_acm module, appears as /dev/ttyACM0
   3. On disconnect* modem is disconnected, /dev/ttyACM0 cleaned up
   4. Modem can be reconnected

  * = modem can even be disconnected by causing it to restart. If the
  device is closed accordingly it'll get reattached with same device
  name. If /dev/ttyACM0 is left open while restarting the modem upon
  reconnecting it will get assigned next ttyACM -device, for example
  /dev/ttyACM1.

  <I'll edit here the uname -r and /proc/version_signature>
   
  Under 2.6.28-11-generic:
  ===========================

   1. Connect usb modem (before booting)
   2. Most likely will fail before cdc_acm could be loaded: (this is also in attachment dmesg-2.6.28-11.log)

  [  589.600044] usb 4-1: new full speed USB device using uhci_hcd and address 10
  [  589.720036] usb 4-1: device descriptor read/64, error -71
  [  589.944039] usb 4-1: device descriptor read/64, error -71
  [  590.160075] usb 4-1: new full speed USB device using uhci_hcd and address 11
  [  590.280031] usb 4-1: device descriptor read/64, error -71
  [  590.505027] usb 4-1: device descriptor read/64, error -71
  [  590.720037] usb 4-1: new full speed USB device using uhci_hcd and address 12
  [  591.128025] usb 4-1: device not accepting address 12, error -71
  [  591.240049] usb 4-1: new full speed USB device using uhci_hcd and address 13
  [  591.648047] usb 4-1: device not accepting address 13, error -71
  [  591.648059] hub 4-0:1.0: unable to enumerate USB device on port 1

   3. Any reconnection attempts** will fail with the messages above

  ** = I've tried several different usb-cables in addition to the ones
  working under 2.6.24's.

  $ uname -a 
  Linux joonas-pc 2.6.28-11-generic #42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux

  $ cat /proc/version_signature 
  Ubuntu 2.6.28-11.42-generic

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