indicator-network crash on org.freedesktop.DBus.Error.UnknownMethod: Method "GetProperties" with signature "" on interface "org.ofono.SimManager" doesn't exist

For me, this happens only when you have no SIM inserted. indicator-network crashes in that case when it tries to access the non-existing ofono SIM interface. Executing indicator-network from the command line I see:

phablet@ubuntu-phablet:~$ /usr/lib/arm-linux-gnueabihf/indicator-network/indicator-network-service
ModemManager::ModemManager()
void SimUnlockDialog::Private::reset()
org.freedesktop.DBus.Error.UnknownMethod: Method "GetProperties" with signature "" on interface "org.ofono.SimManager" doesn't exist

Segmentation fault (core dumped)

list-modems script with no SIM inserted shows that org.ofono.SimManager does not appear in the "Interfaces" property of the modem, so it should not be used:

root@ubuntu-phablet:/usr/share/ofono/scripts# ./list-modems
[ /ril_0 ]
    Revision = M9615A-CEFWMAZM-2.0.1700.98
    Emergency = 0
    Powered = 1
    Lockdown = 0
    Type = hardware
    Online = 1
    Model = Fake Modem Model
    Features = rat
    Manufacturer = Fake Manufacturer
    Interfaces = org.ofono.RadioSettings org.ofono.CallVolume org.ofono.VoiceCallManager
    Serial = 355136050779043
    [ org.ofono.RadioSettings ]
        FastDormancy = 0
        TechnologyPreference = umts
        ModemTechnologies = gsm umts
    [ org.ofono.CallVolume ]
        SpeakerVolume = 0
        MicrophoneVolume = 0
        Muted = 1
    [ org.ofono.VoiceCallManager ]
        EmergencyNumbers = 08 000 999 110 112 911 118 119

This happens for me when I have a SIM inserted too

This happens for me even before the latest ofono landing and when roaming

The crash is caused by indicator-network missing a break in a switch-case. Silo 6 is being prepared for testing,

armhf packages ready in silo 6.

see the MP for testing instructions.

So the problem occurs because prior to the 20140804 version of ofono, when a SIM was absent, the only interface active was the VoicecallManager, whereas the 0804 version now also includes an active RadioSettings interface ( which was done so the settings UI could query the supported radio technologies ). This in turn trigged a day 1 bug in indicator-network.

I've tested the fix from silo #6 on mako, and can no longer reproduce the crash.

This bug was fixed in the package indicator-network - 0.5.1+14.10.20140805-0ubuntu1

---------------
indicator-network (0.5.1+14.10.20140805-0ubuntu1) utopic; urgency=low

  [ Antti Kaijanmäki ]
  * Add missing break to switch-case. When ofono tells modem supports
    RadioSettings interface there is an unintentional falltrough which
    causes ofono code to try to create an SimManager instead. (LP:
    #1352744)
 -- Ubuntu daily release <email address hidden> Tue, 05 Aug 2014 17:22:18 +0000