There's a large number of instances of ofono dying and being respawned
by upstart:
Sep 27 12:03:36 ubuntu-phablet ofonod[1195]: [UNSOL]< UNSOL_RIL_CONNECTED
Sep 27 12:03:36 ubuntu-phablet ofonod[1195]: GET_SIM_STATUS reques failed: 2;
retries: 1
[...]
Sep 27 12:03:39 ubuntu-phablet NetworkManager[1183]: <info> (/ril_0) updated
available interfaces
Sep 27 12:03:40 ubuntu-phablet ofonod[1195]: Querying PIN authentication state
failed
Sep 27 12:03:40 ubuntu-phablet NetworkManager[1183]: <info> ofono disappeared
Sep 27 12:03:40 ubuntu-phablet kernel: [ 21.828231] init: ofono main process
(1195) killed by SEGV signal
Sep 27 12:03:40 ubuntu-phablet kernel: [ 21.828322] init: ofono main process
ended, respawning
[...]
Sep 27 12:03:46 ubuntu-phablet ofonod[1967]: oFono version 1.12
This concerns me somewhat. Is this SIM locked by a PIN?
In the instance where you succesfully connected, it's one of the cases
where there were no such errors about PIN authentication. I however
can't explain how this might have changed without user intervention. One
other failure seems to have been where ofono failed to respond to a dbus
message.
Reassigning to ofono -- I sincerely think there is a bigger issue here
which causes the connection to fail. I won't be able to reproduce this
without having the same SIM (and since we're not in the same country
either, it might be even harder). There is definitely a need for further
investigation.
Michael, could you get debug logs from ofono? You should be able to edit
/etc/init/ofono.conf to add "-d" to the exec ofonod line in that file,
reboot, and still be able to reproduce the issue. In this case we'll get
debug information in syslog which may help figuring out the problem.
** Package changed: network-manager (Ubuntu) => ofono (Ubuntu)
** Changed in: ofono (Ubuntu)
Importance: Undecided => High
** Changed in: ofono (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1231995
Title:
Cellular networking on Nexus 4 doesn't really work at all
Status in “ofono” package in Ubuntu:
Incomplete
Bug description:
On the Nexus 4 it's nearly impossible to get cellular networking to
connect.
The only way I sometimes get it to connect is to manually turn off
WiFi and then reboot the phone. But even then it only connects like
every second try.
Having WiFi enabled (not even being in range of a known WiFi network)
seems to be enough to prevent cellular networking from connecting.
Roaming between WiFi and cellular (for example when leaving home) does
not work at all.
Attached you can find a syslog from my desperate try to get a mobile
connection. You should see around 5 reboots until I finally managed to
get some bytes through the cellular connection.
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https://bugs.launchpad.net/ubuntu/+source/ofono/+bug/1231995/+subscriptions
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