Public bug reported:

Release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"

apt-cahe policy usb-modeswitch
usb-modeswitch:
  Instalados: 1.2.3+repack0-1ubuntu2
  Candidato:  1.2.3+repack0-1ubuntu2
  Tabla de versión:
 *** 1.2.3+repack0-1ubuntu2 0
        500 http://mx.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status


I can't connect using my nokia CS-10 usb modem, usb-modeswitch fails when 
trying to change mode. I have tested my modem in two different machines with 
fresh installs of ubuntu 12.04 and the result was the same in both of them.

Here is the output of dmesg for the device :

[  249.143605] usb 1-1.1: new high-speed USB device number 4 using ehci_hcd
[  249.298240] Initializing USB Mass Storage driver...
[  249.298757] scsi6 : usb-storage 1-1.1:1.0
[  249.298994] usbcore: registered new interface driver usb-storage
[  249.299001] USB Mass Storage support registered.
[  249.384645] usbcore: registered new interface driver uas
[  250.296095] scsi 6:0:0:0: CD-ROM            Nokia    Datacard CD-ROM  0001 
PQ: 0 ANSI: 0
[  250.299283] sr1: scsi3-mmc drive: 0x/0x caddy
[  250.299864] sr 6:0:0:0: Attached scsi CD-ROM sr1
[  250.300181] sr 6:0:0:0: Attached scsi generic sg2 type 5
[  250.383398] sr1: CDROM (ioctl) error, command: Get event status notification 
4a 01 00 00 10 00 00 00 08 00
[  250.383410] sr: Sense Key : Hardware Error [current] 
[  250.383414] sr: Add. Sense: No additional sense information
[  250.515610] sr1: CDROM (ioctl) error, command: Xpwrite, Read disk info 51 00 
00 00 00 00 00 00 02 00
[  250.515636] sr: Sense Key : Hardware Error [current] 
[  250.515644] sr: Add. Sense: No additional sense information
[  250.647440] sr1: CDROM (ioctl) error, command: Xpwrite, Read disk info 51 00 
00 00 00 00 00 00 02 00
[  250.647464] sr: Sense Key : Hardware Error [current] 
[  250.647473] sr: Add. Sense: No additional sense information

I attached usb-modeswitch log for more information, as I can see in
file,  modeswitch falls in a loop searching for the device.  I have
tested the modem too in fedora 16 and chakra linux updated to last
version,  the usb modem works fine, that lets me think its an ubuntu
related bug.

I can provide more info if you need.

** Affects: usb-modeswitch (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: modem modeswitch usb

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https://bugs.launchpad.net/bugs/1003045

Title:
  Nokia CS-10 usb modem can't connect on Ubuntu 12.04

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