1024309 - [B2G][Geolocation][AGPS] AGPS can not work well in SIM2

Status: RESOLVED DUPLICATE of bug 878748

(Firefox OS Graveyard :: RIL, defect)

Description

[Guang.Yu]

AGPS can not work in SIM2.
while using SIM2 only, and data connection has been enabled, AGPS can NOT work well.

Comment 1

[Chris Peterson [:cpeterson]]

Guang: Does AGPS fail completely using SIM2 or does it work but not as well (?) as SIM1? Is this a bug in Mozilla's geolocation provider or Spreadtrum's RIL?

Comment 2

[Guang.Yu]

Hi Chris：
please let me provide more information:
1. AGPS fail completely using SIM2.
2. AGPS works well using SIM1
3. It seems like a software issue, which cased by Mozilla's Geolocation provider.

Comment 3

[Preeti Raghunath(:Preeti)]

Blocking on it for 1.4

Comment 4

[Jessica Jong [:jessica] (inactive)]

A quick guess is that currently GonkGPSGeolocationProvider always uses RadioInterface with service id 0 [1]. With DSDS, you can setup 'supl' data connection only on the selected SIM for data service.
See also bug 878748.

[1] http://mxr.mozilla.org/mozilla-central/source/dom/system/gonk/GonkGPSGeolocationProvider.cpp#653

Comment 5

[shawn ku [:sku]]

(In reply to Jessica Jong [:jjong] [:jessica] from comment #4)
> A quick guess is that currently GonkGPSGeolocationProvider always uses
> RadioInterface with service id 0 [1]. With DSDS, you can setup 'supl' data
> connection only on the selected SIM for data service.
> See also bug 878748.
> 
> [1]
> http://mxr.mozilla.org/mozilla-central/source/dom/system/gonk/
> GonkGPSGeolocationProvider.cpp#653

Yes, Jessica, the problem now is GonkGPSGeolocationProvider.cpp always use slot0 to perform AGPS related feature.

Agree with you that we might need to use selected SIM to be parameter as clientId.

Comment 6

[:garvan]

Does GPS not work at all, or just take a long time to get a fix?

Comment 7

[Guang.Yu]

(In reply to Garvan Keeley [:garvank] from comment #6)
> Does GPS not work at all, or just take a long time to get a fix?

Hi Garvan:
GPS need a long time to get fix without AGPS. 
GPS can get fix even there is no SIM card in SIM1 or SIM2 slot, but need more time.
with SIM1 data connection GPS can get a fast TTFF, but not in SIM2. That is the question.