The following extract from the syslog shows the kernel recognizing the
device as a SCSI CD-ROM drive, not as a modem.
@Joshua: Can you please explain why you say that "This is not a
usb_modeswitch problem, as mode switching and serial port creation have
completed fine"?
Jul 17 22:50:51 ITMINFDLENA1 kernel: [ 1732.647795] usb 2-1.2: new full-speed
USB device number 4 using ehci_hcd
Jul 17 22:50:51 ITMINFDLENA1 kernel: [ 1732.742269] usbserial_generic
2-1.2:1.0: generic converter detected
Jul 17 22:50:51 ITMINFDLENA1 kernel: [ 1732.742509] usb 2-1.2: generic
converter now attached to ttyUSB0
Jul 17 22:50:51 ITMINFDLENA1 kernel: [ 1732.774512] Initializing USB Mass
Storage driver...
Jul 17 22:50:51 ITMINFDLENA1 kernel: [ 1732.774616] usbcore: registered new
interface driver usb-storage
Jul 17 22:50:51 ITMINFDLENA1 kernel: [ 1732.774620] USB Mass Storage support
registered.
Jul 17 22:50:51 ITMINFDLENA1 modem-manager[1073]: <info> (ttyUSB0) opening
serial port...
Jul 17 22:51:03 ITMINFDLENA1 modem-manager[1073]: <info> (ttyUSB0) closing
serial port...
Jul 17 22:51:03 ITMINFDLENA1 modem-manager[1073]: <info> (ttyUSB0) serial port
closed
Jul 17 22:51:03 ITMINFDLENA1 modem-manager[1073]: <info> (ttyUSB0) opening
serial port...
Jul 17 22:51:09 ITMINFDLENA1 modem-manager[1073]: <info> (ttyUSB0) closing
serial port...
Jul 17 22:51:09 ITMINFDLENA1 modem-manager[1073]: <info> (ttyUSB0) serial port
closed
Jul 17 22:51:36 ITMINFDLENA1 kernel: [ 1777.684373] usb 2-1.2: USB disconnect,
device number 4
Jul 17 22:51:36 ITMINFDLENA1 kernel: [ 1777.684613] generic ttyUSB0: generic
converter now disconnected from ttyUSB0
Jul 17 22:51:36 ITMINFDLENA1 kernel: [ 1777.684642] usbserial_generic
2-1.2:1.0: device disconnected
Jul 17 22:51:42 ITMINFDLENA1 kernel: [ 1784.270601] usb 2-1.1: new full-speed
USB device number 5 using ehci_hcd
Jul 17 22:51:42 ITMINFDLENA1 kernel: [ 1784.365133] usbserial_generic
2-1.1:1.0: generic converter detected
Jul 17 22:51:42 ITMINFDLENA1 kernel: [ 1784.365260] usb 2-1.1: generic
converter now attached to ttyUSB0
Jul 17 22:58:11 ITMINFDLENA1 kernel: [ 2172.267863] usb 2-1.1: USB disconnect,
device number 5
Jul 17 22:58:11 ITMINFDLENA1 kernel: [ 2172.268115] generic ttyUSB0: generic
converter now disconnected from ttyUSB0
Jul 17 22:58:11 ITMINFDLENA1 kernel: [ 2172.268146] usbserial_generic
2-1.1:1.0: device disconnected
Jul 17 22:58:20 ITMINFDLENA1 kernel: [ 2180.899099] usb 2-1.1: new high-speed
USB device number 6 using ehci_hcd
Jul 17 22:58:20 ITMINFDLENA1 kernel: [ 2181.009104] scsi6 : usb-storage
2-1.1:1.0
Jul 17 22:58:21 ITMINFDLENA1 kernel: [ 2182.008286] scsi 6:0:0:0: CD-ROM
NVTL Mass Storage 2.31 PQ: 0 ANSI: 0
Jul 17 22:58:21 ITMINFDLENA1 kernel: [ 2182.016101] sr1: scsi-1 drive
Jul 17 22:58:21 ITMINFDLENA1 kernel: [ 2182.016370] sr 6:0:0:0: Attached scsi
CD-ROM sr1
Jul 17 22:58:21 ITMINFDLENA1 kernel: [ 2182.016635] sr 6:0:0:0: Attached scsi
generic sg2 type 5
** Also affects: usb-modeswitch (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/885316
Title:
Mobile broadband aspect of modem/storage device not showing up in
NetworkManager -- Huawei E220, Novatel Wireless MiFi® 2352
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