I'm running oFono with the rilmodem driver on an MSM8930AB-based phone
(Samsung GS4 Mini GT-I9195). I'm having issues getting it to come online
reliably. oFono can always connect to rild and get device identifiers
etc., but often when I set the modem property Online to true, it doesn't
come all the way up. It will report being Online, and rild sends some
things like signal strength updates, but most of the interfaces and
properties oFono offers aren't available in this state (e.g., SimManager
reports SIM not Present.) When it happens I kill ofonod and try again
until it works. It's pretty easy to spot, because a successful
connection causes a flurry of SIM I/O calls. I haven't used it
extensively yet, but network state, SMS, and calls are working in my tests.
Here are a couple of snippets from logs at different times:
E/RILD (30928): radioState(0) so did not update simState
E/RILD ( 3655): SetSimOperator: invalid operator
E/RILD ( 3655): OnRadioStateChanged: sim operator not ready wait for read
ofonod[19106]: [0,0014]< RIL_REQUEST_SET_PREFERRED_NETWORK_TYPE failed
RADIO_NOT_AVAILABLE
E/RILD (19068): Blocked preferred net type(1) due to sim state(0)
It's almost as if there is a circular dependency between the SIM and the
radio state, that resolves itself if the timing comes out right. I can
give more detailed logs if something specific would be helpful.
From comparing some logs and making some guesses, I arrived at a hack
of sending RIL_REQUEST_SCREEN_STATE = TRUE as part of the rild
connection initialization, and sending TRUE again later in
ril_radio_settings_probe(). This makes the startup more likely to
succeed, but still not perfect (it changed from taking 10-20 tries to
something like five.) I don't know if one of these changes is more
effective than the other, but it's good enough for now.
So, has anyone else seen this kind of thing, or have ideas on how to
make it more reliable? Also, what is the state of the rilmodem fork at
https://github.com/rilmodem/ofono ? I'm using the mainline oFono code
right now.
Thanks,
Joey Hewitt
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