Thank you, I get it now.

Searched for `SURPRISE_REMOVAL` in the ~40MB capture log, only to find it at the very bottom:

[255854 ms] UsbSnoop - FilterDispatchPnp(9e07345c) : IRP_MJ_PNP (IRP_MN_QUERY_DEVICE_RELATIONS)
[255854 ms] UsbSnoop - FdoHookDispatchPnp(9e07345c) : IRP_MJ_PNP (IRP_MN_QUERY ...

Thanks for the lsusb listing, it explains why you got the modem on ttyUSB2.
iBall has disabled interface 2 and 3 in the dongle, interfaces which if enabled would had created ttyUSB devices.

Any sane reason to disable it?

Another query, how to deduce from the capture log that a switch happened ...

Script I'm using to connect after plug in:

to be run in root session:

#!/bin/bash
usb_modeswitch -W -n -I -v 05c6 -p f000 -V 05c6 -P 0016 -M 55534243e0793c88000000000000061b000000020000000000000000000000 > /dev/null 2>&1
modprobe usb_wwan
modprobe option
echo 05C6 0016 > /sys/bus/usb-serial ...

sure:

root@SiRi-Inspiron-3521:~# lsusb -v -d 05c6:0016

Bus 003 Device 004: ID 05c6:0016 Qualcomm, Inc.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x05c6 Qualcomm ...

Thanks a tonne, it worked!

Steps followed:

1. plugged in and noticed
root@SiRi-Inspiron-3521:~# lsusb
Bus 003 Device 012: ID 05c6:f000 Qualcomm, Inc.


2. Pushed the message
root@SiRi-Inspiron-3521:~# usb_modeswitch -W -I -v 05c6 -p f000 -V 05c6 -P 0016 -M ...

I'm sorry for the typo & invalid usb_modeswitch run.

I ran the cmd with suggested message:

root@SiRi-Inspiron-3521:~# usb_modeswitch -W -I -v 05c6 -p f000 -i 5 -M 55534243123456780000000000000601000000000000000000000000000000
Taking all parameters from the command line


* usb_modeswitch: handle ...

I've attached the USBSnoop.log for the action iBall3..5G is plugged in. Also other files which I though might help.

- I've disabled global automatic switching

switch config file I used:


# HSDPA USB modem from dealextreme

DefaultVendor=0x05c6
DefaultProduct=0xf1000

TargetVendor= 0x05c6 ...

I see I've to modify rules per :
http://www.draisberghof.de/usb_modeswit ... f=4&t=1114

Will check & update.

- Recently bought a Laptop with Ubuntu 12.04LS(Kernel 3.2.0-39-generic) on it.
- I'm unable to `plug & use` iBall 3.5G Connect v2.0 USB DataCard
- However, on the same OS Huawei E1731 USB DataCard works perfectly 'plug & use(play)'.
- Huawei E1731 comes with separate installer(.bin) for Linux ...