USB GSM Huawei E173 does not reconnect to network after disconnect

[aeratek]

Huawei E173 dongle is able to successfully connect to T-Mobile network using current configuration/code. When in a low-coverage area and it disconnects, it does not reconnect to the T-Mobile network, until the device is restarted.

[transistorize]

I was reading this FAQ in the GPSD documentation, and it might explain why this Huawei dongle behaves this way, for the same reasons: http://www.catb.org/gpsd/faq.html#sleep

[aeratek]

Ok. I think you're saying that this paragraph is the relevant one that
gives us next actions in trying to resolve both the GPS and GSM dongle
reconnection issues:

There is a solution to this problem: create a stable gps-usb device that is
actually a symlink which gets modified by hotplug events, and give gpsd that
device when you invoke it. You'll need these replacement udev rules
http://www.catb.org/gpsd/70-persistent-usb-gps.rules [1], and the
experience required to patch them so the vendor ID in the last one matches
your GPS hardware (look in your lsusb output).

[1] http://www.catb.org/gpsd/70-persistent-usb-gps.rules

On Mon, Jul 21, 2014 at 2:14 PM, Bryan Valentini notifications@github.com
wrote:

I was reading this FAQ in the GPSD documentation, and it might explain why
this Huawei dongle behaves this way, for the same reasons:
http://www.catb.org/gpsd/faq.html#sleep

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#7 (comment)
.

[trevorcarlson]

Guys,

From my experiments, the modem automatically gets assigned to the /dev/gsmmodem device when it is configured properly. Can you double-check that that link is being set up? We then just have to update the scripts to point to there (See the kinisiinternet script that I recently updated [1]) and we'll be set to go (with an auto restart function added as well).

[1] https://github.com/kinisi/kinisi-agent-nodejs/blob/master/scripts/kinisiinternet

[aeratek]

I started up a Raspberry Pi B+ with the USB dongle in the top-most USB port (same physical location as the Raspberry Pi model B, but the B+ has two additional USB ports next to it in the corner now). I went to /dev/ and didn't see a /gsmmodem link set up.