Telephony stack not running in x86 emulator

[Martti Piirainen]

The x86 emulator is supposed to be a valuable tool for testing, app development and more. But cellular telephony functionality is not available by default.

Test steps:
 - Create an Ubuntu Touch x86 emulator (using 'ubuntu-emulator create --arch=i386')
 - Try any cellular telephony functionality, such as
    - send an SMS from UI
    - receive an SMS via 'adb emu sms send 12345 Hello'
    - change network strength via 'adb emu gsm signal 31'
 - It's all unavailable because oFono is not running and not online.

In the real device, oFono is started by upstart, and then set to 'online' state by urfkill.

In the emulator, ofono must be started manually ('start ofono'), urfkill cannot be started at all, but oFono can be set online via '/usr/share/ofono/scripts/online-modem'.

Version info:
root@ubuntu-phablet:~# system-image-cli -i
current build number: 120
device name: generic_x86
channel: ubuntu-touch/utopic-proposed
last update: 2014-07-08 03:32:25
version version: 120
version ubuntu: 20140708
version device: 20140625

[Martti Piirainen (piiramar)]

The oFono part seems to be caused by bad startup dependencies. On my machine, the oFono daemon startup happens just a few seconds before the RIL daemon startup, while oFono expects RIL to be up'n'running first.

grep ofono /var/log/syslog:
Jul 8 07:22:21 ubuntu-phablet ofonod[653]: oFono version 1.12
Jul 8 07:22:21 ubuntu-phablet ofonod[653]: RILDEV detected modem type ril, 1 SIM slot(s)
Jul 8 07:22:21 ubuntu-phablet ofonod[653]: create_ril: can't connect to RILD: Connection refused (111)
Jul 8 07:22:21 ubuntu-phablet ofonod[653]: Exiting...
< ... repeats ca. 10 times ... >
Jul 8 07:22:22 ubuntu-phablet ofonod[709]: oFono version 1.12
Jul 8 07:22:22 ubuntu-phablet ofonod[709]: RILDEV detected modem type ril, 1 SIM slot(s)
Jul 8 07:22:22 ubuntu-phablet ofonod[709]: create_ril: can't connect to RILD: Connection refused (111)
Jul 8 07:22:22 ubuntu-phablet ofonod[709]: Exiting...
Jul 8 07:22:22 ubuntu-phablet kernel: [ 3.218832] init: ofono main process (709) terminated with status 1
Jul 8 07:22:22 ubuntu-phablet kernel: [ 3.218861] init: ofono respawning too fast, stopped

/system/bin/logcat -b radio -v time:
07-08 07:22:23.512 D/RILD ( 573): overriding with -s /dev/socket/qemud
07-08 07:22:23.522 I/RIL ( 573): Opening socket /dev/socket/qemud
07-08 07:22:23.522 E/RILC ( 573): RIL_register: RIL version 9
07-08 07:22:23.522 D/RIL ( 573): setRadioState(0)
07-08 07:22:23.522 D/AT ( 573): AT> ATE0Q0V1
07-08 07:22:23.522 D/AT ( 573): AT< OK

I can fix that by delaying oFono's respawns (append 'post-stop exec sleep 1' to /etc/init/ofono.override). But the upstart config also points to a 'rild-ready' signal, so maybe that mechanism doesn't work as intended.

[Tony Espy (awe)]

I've added a task for urkfill, as Martti mentions that he can't get it to start at all, and I noticed the same thing today while testing an ubuntu-emulator merge proposal.

[Tony Espy (awe)]

I've just confirmed that both ofono and urfkill are auto-started and working in our current x86 vivid stable ( #1 ) and proposed ( #59 ) images.

I've added tasks for Ubuntu (RTM) for both and set to Incomplete, as it's unclear if there are still issues with RTM.