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[madbiologist <1314842@xxxxxxxxxxxxxxxxxx>]

** Tags added: trusty

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https://bugs.launchpad.net/bugs/1314842

Title:
  usb_modeswitch not run correctly for 3G dongle

Status in usb-modeswitch package in Ubuntu:
  Confirmed

Bug description:
  I am using a laptop (Asus N56VZ) with Ubuntu 14.04 LTS (recently
  upgraded from 12.04 LTS) and until recently none of my 3G USB dongles
  worked (I have a few). Note that the very same problem occurred on
  12.04 and I upgraded early hoping for this issue to go away. It
  didn't.

  After investigation, it seems that usb_modeswitch is't doing its
  magic:

  My test dongle is a Huawei Technologies Co., Ltd.  ID 12d1:14c1

  According to the udev rules and the usb_modeswitch data I could dig
  up, the product ID should switch to 14c6 to make it work correctly.

  A file named "12d1:14c1" IS in the tgz package of usb-modeswitch-data,
  but nonetheless this is all I see in /var/log/syslog when I plug the
  dongle in:

  ===================================================================================
  May  1 00:44:49 rramondalap02 kernel: [   54.336137] usb 3-1: new high-speed USB device number 3 using xhci_hcd
  May  1 00:44:49 rramondalap02 kernel: [   54.354566] usb 3-1: New USB device found, idVendor=12d1, idProduct=14c1
  May  1 00:44:49 rramondalap02 kernel: [   54.354570] usb 3-1: New USB device strings: Mfr=3, Product=2, SerialNumber=0
  May  1 00:44:49 rramondalap02 kernel: [   54.354571] usb 3-1: Product: Vodafone Mobile Broadband (Huawei) 
  May  1 00:44:49 rramondalap02 kernel: [   54.354572] usb 3-1: Manufacturer: Vodafone Group (Huawei) 
  May  1 00:44:49 rramondalap02 kernel: [   54.355682] usb-storage 3-1:1.0: USB Mass Storage device detected
  May  1 00:44:49 rramondalap02 kernel: [   54.355814] scsi7 : usb-storage 3-1:1.0
  May  1 00:44:49 rramondalap02 kernel: [   54.355879] usb-storage 3-1:1.1: USB Mass Storage device detected
  May  1 00:44:49 rramondalap02 kernel: [   54.355985] scsi8 : usb-storage 3-1:1.1
  May  1 00:44:49 rramondalap02 mtp-probe: checking bus 3, device 3: "/sys/devices/pci0000:00/0000:00:14.0/usb3/3-1"
  May  1 00:44:49 rramondalap02 mtp-probe: bus: 3, device: 3 was not an MTP device
  May  1 00:44:50 rramondalap02 kernel: [   55.354598] scsi 7:0:0:0: CD-ROM            Vodafone CD ROM (Huawei)  2.31 PQ: 0 ANSI: 2
  May  1 00:44:50 rramondalap02 kernel: [   55.355275] scsi 8:0:0:0: Direct-Access     Vodafone Storage (Huawei)      PQ: 0 ANSI: 2
  May  1 00:44:50 rramondalap02 kernel: [   55.356963] sr1: scsi-1 drive
  May  1 00:44:50 rramondalap02 kernel: [   55.357074] sr 7:0:0:0: Attached scsi CD-ROM sr1
  May  1 00:44:50 rramondalap02 kernel: [   55.357135] sr 7:0:0:0: Attached scsi generic sg3 type 5
  May  1 00:44:50 rramondalap02 kernel: [   55.357264] sd 8:0:0:0: Attached scsi generic sg4 type 0
  May  1 00:44:50 rramondalap02 kernel: [   55.359620] sd 8:0:0:0: [sdc] Attached SCSI removable disk
  May  1 00:44:50 rramondalap02 usb_modeswitch: switch device 12d1:14c1 on 003/003
  ===================================================================================

  Now I found a way to make it work:

  sudo usb_modeswitch -v 12d1 -p 14c1 -M
  '55534243123456780000000000000011062000000100000000000000000000'

  After some seconds pass the dongle is correctly switched to the new
  ProductID and works as intended.

  I thought the issue was with the usb-storage delay (as per
  /etc/usb_modprobe.conf ) but even after configuring SetStorageDelay=6
  I got no change in behavior.

  Still, I hope that someone more accustomed to the internals of
  usb_modeswitch will find a solution, given that a workaround is
  already available.


  Further info on my machine:

  uname -a
  Linux rramondalap02 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:11:08 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

  All USB ports are 3.0 and I suspect this is related to the issue: on
  my work desktop, 2.0 ports, the same dongle works right away in 12.04
  LTS

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