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Xperia X GPS problem - SW or HW?

asked 2018-06-08 14:09:34 +0300

khul gravatar image

I am still on Sailfish X Yesterday, I installed updates for modrana and osmscout. I then dropped the phone from a moderate height (~60cm), without having tried any GPS app. After this, GPS apps don't work (including firefox on android which worked before). There seems to be no GPS information. I tried GPSinfo and Hello GPS, which both say there are zero satellites seen. Is it possible that the updates of those two GPS clients somehow affected the GPS settings to essentially turn it off permanently? Or should I conclude that the hardware is broken? Any suggestions for things to try? Re-booting didn't help. Thanks!

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What are your location settings? Is GPS enabled? I doubt that the mentioned app updates could have caused your problem. A broken GPS antenna connector (caused by the drop) seems more likely to me...

ziellos ( 2018-06-08 14:17:52 +0300 )edit

what does your CSD tool says on the GPS test?

rgrnetalk ( 2018-06-08 16:04:30 +0300 )edit

Thanks for the responses! Yes, "Location" is selected, and GPS is reported as active by the GPSinfo app. The CSD tool does show a number of satellites. I see azimuth and elevation values and blue bars which I expect represent signal strengths. And leaving this tool, osmscout pinpoints me when I start it. But it doesn't seem to be tracking me as I move, unless I leave the CSD tool running the GPS test, in which case it does. (That's how it seems after a very quick test.) Also, the GPSinfo and Hello GPS apps show continuously updating live information, reporting a fix and many satellites, when csd is running, but zero satellites when I stop csd. The GPS hardware is obviously working. I shall upgrade the system to 2.2, hoping that will fix things, so I don't have to run csd continually.

khul ( 2018-06-08 17:30:03 +0300 )edit

I updated to, and the situation is the same. As soon as I turn off the CSD GPS test the GPS apps stop updating. I guess perhaps it is a hardware issue after all, but then it seems the CSD test is using the hardware differently (the test result is Pass). Or perhaps running the osmscout updated for 2.2 under 2.1 somehow screwed things up? It's a bit mysterious to me. For now, I guess I'll make sure to start the csd test when I want to use GPS.

khul ( 2018-06-08 18:48:44 +0300 )edit

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answered 2018-06-08 17:13:51 +0300

Giacomo Di Giacomo gravatar image

updated 2018-06-08 17:14:04 +0300

Put your phone running an app requiring GPS in a place where it can see a significant portion of the sky and leave it there for about 1 hour. It probably needs to rebuild the satellite almanac (cold fix), which may require some tens of minutes. If it does not work, it's likely you have an issue with the GPS antenna (broken or disconnected from the receiver).

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Would this explain why the GPS apps work fine when the GPS test of the CSD tool is running but lose GPS connection completely as soon as that test is turned off?

khul ( 2018-06-08 18:41:09 +0300 )edit

No. This looks definitely like a software issue. Have you tried other GPS apps?

Giacomo Di Giacomo ( 2018-06-08 18:56:00 +0300 )edit

Yes,I have used several apps. It was very reproducible. BUT, now suddenly they all work without the csd test running! Maybe some delayed result of the system update? I guess it might be good if someone understood what happened, but for now, it all works fine. I guess I'll see if the problem comes back, but for now, I'm happy! Thanks everyone for the quick and helpful response!

khul ( 2018-06-08 19:16:56 +0300 )edit

The GPS receiver rebuilt the satellite almanac.

Giacomo Di Giacomo ( 2018-06-09 02:16:19 +0300 )edit

It's the same for my JollaC for a few weeks now, positioning is hardly usable anymore no matter if I use Whogo Maps, Here We Go, or GPSInfo. Yesterday I got lost when I tried to navigate to an appointment. In the end I was late. That annoyed me so much that I seriously considered to drop Sailfish. I will try to keep CSD Tool with GPS-Test open for a while and hope it will help.

Next week I'll be on holiday. If the GPS isn't working reliably I get in trouble with my wife.

jollajo ( 2018-07-24 21:43:31 +0300 )edit

answered 2018-08-07 17:52:25 +0300

khul gravatar image

Since my final comment on this is not visible in the together app, I just wanted to make clear that for me it started to work fine shortly after the update, and still is. I only had the problem for a day or so.

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In which case, you have enough karma points, please consider closing the question since you have a result even if only by luck/chance.

Edz ( 2018-08-09 12:45:05 +0300 )edit
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Asked: 2018-06-08 14:09:34 +0300

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Last updated: Aug 07