i used to use 12.04 LTS and had the same problem..upgraded to 12.10 as i have read somewhere that 12.10 has a fix for it...but i still face the same problem.. *i have wvdial...usb-mode switch packages *my modem also shows up in lsusb command *i have added my modem under the mobile broadband tab of network settings *enabled networking in recovery mode

NOTE:-when i boot up in the recovery mode..the option is available in the network settings to "ENABLE BROADBAND" and also my modem shows up and i am able to connect it...but i am unable to do so in the normal boot.

p.s:- i use tata photon +


You may try this:

Press ALT+F2 and enter gksu gedit /etc/udev/rules.d/yourtataphoton.rules to create the file we need. Now paste the content below into the file and save it.

RUN+="/lib/udev/modem-modeswitch --vendor 0x12d1 --product 0x1446 --type option-zerocd"

Now just plug in your dongle and configure your connection using NetworkManager.


  • thank you for the reply...but i tried it and it aint working...did exactly the same..rebooted and even gave the device some time..but not worth the wait.. – Yasasvee Jun 17 '13 at 16:26
  • and my /etc/usb-mode/ directory is empty...is that a problem or related to the issue ?? – Yasasvee Jun 17 '13 at 16:28

I've got a Sony P11Z netbook with a built-in USB 3G Modem and i'm using debian, maybe my problem is the same as yours.

# lsusb -s 001:007
Bus 001 Device 007: ID 0af0:7601 Option Globetrotter MO40x 3G Modem (GTM 382)

When booting a 3.10 kernel the mobile broadband option usually is missing (but not always). When i boot a 3.2 kernel it shows up again (most often).

I checked /var/log/syslog while restarting network-manager and found these 3 lines:

Dec  4 08:31:18 plok NetworkManager[4934]: <info> rfkill0: found WiFi radio killswitch (at /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:17/SNY5001:00/rfkill/rfkill0) (platform driver Sony Notebook Control Driver)
Dec  4 08:31:18 plok NetworkManager[4934]: <info> rfkill2: found WWAN radio killswitch (at /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:17/SNY5001:00/rfkill/rfkill2) (platform driver Sony Notebook Control Driver)
Dec  4 08:31:18 plok NetworkManager[4934]: <info> rfkill3: found WiFi radio killswitch (at /sys/devices/pci0000:00/0000:00:1c.1/0000:02:00.0/ieee80211/phy0/rfkill3) (driver ath9k)

Now i found out that, in my case, issuing the following command would bring up the device, regardless of the currently running kernel. It takes a few seconds to initialize (follow the process with tail -f /var/log/syslog), then the "mobile broadband" option would show up in gnome-network-manager.

echo 1 > /sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:17/SNY5001:00/rfkill/rfkill2/state

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