-- UPDATE 1: relevant syslog lines.

-- UPDATE 2: a step further. I was able to solve the GSM modem enable failed: (32) SIM PIN required loop specifying the PIN in Network manager > Edit connections... > Mobile broadband > Edit > Mobile broadband > PIN.

Original question

I'm facing a pretty annoying issue with a multimode GPRS/EDGE/UMTS/HSDPA USB internet key I use for internet access, product ONDA WCDMA Technologies MSM. OS is Ubuntu Natty 11.04 64-bit.

The application asking me to enter the PIN starts only after some minutes the key is plugged in; time varies from immediately to 5 minutes and more. I try to trigger the recognition killing Network Manager applet nm-applet and restarting it, but I'm not sure it helps. I also see there is an utility called /usr/bin/modem-manager but I'm not able to run it (provided it could be useful, as man modem-manager gives nothing).

I'd like the key to be detected as soon as I plug it in, do you have any hint? I hate to say so but on Windows it takes only few seconds and the dongle is recognized (using product manufacturer dial in software).


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A maintainer of NetworkManager explained the problem using these words:

There are certain modems for which the firmware simply doesn't respond to serial setup packets sent on certain interfaces, which cause the kernel to wait for a while before timing out.

Just in case you are experiencing a similar issue I sincerely suggest you to report it on NM mailing list, they won't miss to help. I got a patch and now the device is recognized in less than 60 seconds.

And bonus, the fix will be submitted to the mainstream kernel for everyone's benefit.

Reference: the full thread.

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  • Can you please explain the process of mailing them in detail ? I've a ZTE modem and it takes 2 minutes to connect. – avi Oct 16 '11 at 13:17
  • Go to this page and subscribe to the list. You will be sent an email to confirm the subscription. After you have confirmed you can send regular mails to the list using this address: networkmanager-list@gnome.org. Describe carefully the issue and someone will likely help you. – Paolo Oct 16 '11 at 14:57

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