I have a requirement that I need to first unmount and then mount again the 3G internet modem on ubuntu 12.04 without removing it physically. The modem model is Huawei E173u. So far, I have tried this procedure:
Case 1:
step 1: I connect the modem using wvdial. step 2: I reset using usb_modeswitch. Reset happens successfully. dmesg shows this. step 3: I try to connect again using wvdial. wvdial exits with an error code 16 and further attemps to connect gave "modem not responding" errors.
Case 2:
step 1: I connect using wvdial. step 2: I plug out and plug in the modem step 3: I try to connect again using wvdial. wvdial connects successfully.
Case 3:
step 1: I connect using wvdial. step 2: I reset using usb_modeswitch. Reset happens successfully. dmesg shows this. step 3: I try to connect again using network manager. connects successfully.
I need the case 1 to be working. Is there something that should be done after usb_modeswitch and before trying wvdial? Am i missing something here?
