modem-manager not working

[malakar.subhendu]

Just installed my 12.04 and had restored backup from the 12.04 beta-2 version i was using previously. now my modem is not been detected by ubuntu. Previously it was never a problem(till 11.10). tried to use a third party software "sakis3G". it also didn't worked out(segmentation fault and core dumped). in the beta-2 also, it had problems sometimes but "sakis3G" would have connected to the internet easily. Now it's not working. Please Help!!!

[alexfish]

from a fresh cold boot , allow time for the system to settle , then plug the device

from the terminal

usb-devices

ls -al /dev/serial/by-id

[malakar.subhendu]

still not working.
what are the commands for?
the first one produced a lot of information.
second one there was no such folder.
should i post the output of first one.

[alexfish]

how to find the device :

first use lsusb command

lsusb

it shows a result like

Bus 002 Device 002: ID 0603:00f2 Novatek Microelectronics Corp. 
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 006: ID 12d1:14ac Huawei Technologies Co., Ltd. 
Bus 001 Device 003: ID 059b:047a Iomega Corp. 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

from this info I know the device is

12d1:14ac Huawei Technologies Co., Ltd.

the usb-devices command , look for block information with the device id's , highlighted

T:  Bus=01 Lev=01 Prnt=01 Port=02 Cnt=02 Dev#=  6 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=12d1 ProdID=14ac Rev=00.00
S:  Manufacturer=Huawei Technologies
S:  Product=HUAWEI Mobile
C:  #Ifs= 6 Cfg#= 1 Atr=c0 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 3 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 4 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
I:  If#= 5 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

then post the info , like so

Remember the above is an example , and will explain what the commands do later

[malakar.subhendu]

this is the segment of the modem.

T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 5 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1c9e ProdID=9605 Rev=00.00
S: Manufacturer=USB Modem
S: Product=USB Modem
S: SerialNumber=1234567890ABCDEF
C: #Ifs= 5 Cfg#= 1 Atr=e0 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I: If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I: If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
I: If#= 4 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

[alexfish]

That be the device , buts has no drivers attached , can try load the driver and ensure the device gets entered in the new id , if not recognise by the driver
these commands may load the driver

open up the terminal and enter root

sudo su

modprobe option

try the usb-devices command

if the driver has not loaded after that command ( let me know if it has or has not) try this ,

this command may load the device into the new id

echo 1C9E 9605 > /sys/bus/usb-serial/drivers/option1/new_id

then check the results with the usb-devices command

if this works will post details on how to ensure the drivers loads each time the device is plugged in

[malakar.subhendu]

applied both the methods.
first time it showed the modem and i was able to connect to the internet. then restarted the machine. it does not show the modem now again.

[alexfish]

redo the commands as listed , does it show ,

Also post results of the Device from the terminal

It Don't show , means nothing From where I sit...

alexfish

[malakar.subhendu]

reinstalled precise
but no help.

doing this

echo 1C9E 9605 > /sys/bus/usb-serial/drivers/option1/new_id

the modem got detected
now connected to internet.

result of usb-devices:

T:  Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#=  5 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=1c9e ProdID=9605 Rev=00.00
S:  Manufacturer=USB Modem
S:  Product=USB Modem
S:  SerialNumber=1234567890ABCDEF
C:  #Ifs= 5 Cfg#= 1 Atr=e0 MxPwr=500mA
I:  If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 2 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I:  If#= 4 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage

[ProNux]

That be the device , buts has no drivers attached , can try load the driver and ensure the device gets entered in the new id , if not recognise by the driver
these commands may load the driver

open up the terminal and enter root

sudo su

modprobe option

try the usb-devices command

if the driver has not loaded after that command ( let me know if it has or has not) try this ,

this command may load the device into the new id

echo 1C9E 9605 > /sys/bus/usb-serial/drivers/option1/new_id

then check the results with the usb-devices command

if this works will post details on how to ensure the drivers loads each time the device is plugged in

With your permission, I ought to join this thread.

I have a similar case, though I have a different modem. The drivers were loaded and I can connect to the internet, but it does not retain; I have to enter the same commands whenever I plug the modem. Can you please post how to load the drivers every time the modem is connected.

Thanks in advance.