thanks Alexander & Mathieu
Well ..
TL;DR works again, automagically. !?
After some more testing, I ended up seeing "Error 13 - SIM Card failure".
Next step was testng with another, then a new SIM card.
Still arbitrary errors occured, reboots, module unload/reloads all such didn't
help
to get the connection running again. For another day the modem-manager
was complaining "registration failed" as if the SIM wasn't enabled by the
provider
yet (tho it was, testing with the Android smart phone ..).
Being desperate, retrying to install 12.04 on another HD, a couple of reboots
later:
Mobile Broadband in Network-Manager connects to the GSM network, the login
to the UMTS connection works.
I have actually no clue, if and which parts where bogged, but it seems to be a
mixture of a broken SIM card (out of the sudden) and a confused modem-manager
plus firmware resets of the GOBI card.
I recommend in such cases patient testing, lots of reboots, letting a new SIM
card
settle for another day (just to be sure the provider got the card in the
systems).
During my tests with wvdial parallel to network-manager/modem-manager I have
had
the modem blocking (not answering anymore at all) after a couple of tries,
probably
after the first try. So it seems to be important to use the modem only once
after
firmware initialization, if things don't work: reboot.
hope that helps for others occuring a similar situation : )
** Changed in: modemmanager (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1062184
Title:
Qualcomm Gobi 2000 WWAN modem stopped working in 12.04
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