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[Tony Espy <1467640@xxxxxxxxxxxxxxxxxx>]

Next clue... I disabled network-manager via a manual upstart override
file, and rebooted.  When I try to activate a GPRS context directly via
the ofono script ( /usr/share/ofono/scripts ) 'activate-context', an
error is returned:

Error activating /ril_0/context1: org.ofono.Error.Failed: Operation
failed

At the same time, I see the following syslog error messages from ofono:

Jun 26 15:46:39 ofonod[1518]: ril_setup_data_call_cb: no DNS in context of type 1
Jun 26 15:46:39 ofonod[1518]: ril_gprs_context_deactivate_primary: couldn't remove call_list listener for apn: nxtgenphone.
Jun 26 15:46:39 ofonod[1518]: ril_deactivate_data_call_cb: reply failure for apn: nxtgenphone - GENERIC_FAILURE

Here's the corresponding ril trace:

ofonod[12095]: [0,0143]> RIL_REQUEST_SETUP_DATA_CALL (13,0,nxtgenphone,,,0,IP)
ofonod[12095]: [0,0143]< RIL_REQUEST_SETUP_DATA_CALL {version=9,num=1 [status=65535,retry=-1,cid=0,active=0,type=,ifname=,address=,dns=,gateways=]}

So the DATA_CALL is clearly failing.

And yet another clue from the logcat radio log whenever I try to
activate a context:

E/RILQ    ( 1160): (0/20): [main] qcril_data_request_setup_data_call: unable to get dsi hndl
E/RILQ    ( 1160): (0/20): [main] qcril_data_request_setup_data_call: qcril_data_request_setup_data_call: EXIT with FAILURE
E/RILQ    ( 1160): (0/20): [main] qcril_data_request_deactivate_data_call: no valid CID [-1] match found
E/RILQ    ( 1160): (0/20): [main] qcril_data_response_generic_failure: qcril_data_response_generic_failure: ENTRY
E/RILQ    ( 1160): (0/20): [main] qcril_data_response_generic_failure: qcril_data_response_generic_failure: EXIT
E/RILQ    ( 1160): (0/20): [main] qcril_data_request_deactivate_data_call: qcril_data_request_deact_data_call: EXIT with err

This might be related to the following kernel error in the syslog:

Jun 26 15:42:46 ubuntu-phablet kernel: [   13.529528]
mipi_dsi_controller_cfg: DSI status=8 failed

My bet is that the data failure is related to the "unable to get dsi
hndl" error, not the devices being re-named.   The next thing we should
try and reverting the device-rename to see allows data calls to be made.

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https://bugs.launchpad.net/bugs/1467640

Title:
  No mobile data connection for mako on wily

Status in ofono package in Ubuntu:
  Confirmed

Bug description:
  Mako does not connect to the mobile network anymore starting with
  wily(-proposed) image r229.

  You can find some information in the following discussion on the Ubuntu Phone mailing list: https://lists.launchpad.net/ubuntu-phone/msg13466.html
  list-modem and list-contexts results can be found here: https://lists.launchpad.net/ubuntu-phone/msg13468.html
  And here: https://lists.launchpad.net/ubuntu-phone/msg13475.html

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