[Jolla Tablet] No Navigation on Jolla Tablet?

asked 2016-07-22 00:00:19 +0300

johas gravatar image

updated 2016-07-22 01:49:12 +0300

I want to use the Jolla Tablet for bike navigation, if possible with Komoot (https://www.komoot.de/), a highly functional bike navigation app for Android, working perfectly well on Jolla Phone.

However, on Jolla tablet, navigation does not seem to work at all, neither in Komoot nor in HERE maps app. Both apps are starting properly and show my exact location, but won't track me when i start moving. GPS is activated in Sailfish settings. I tried with improved HERE position recognition both switched on and off, same behaviour. Komoot informs me about its attempt to find my GPS location, but no success either.

I tried all this in different places to make sure it is not a GPS signal issue. My Jolla phone worked perfectly well all the time.

Is this a known bug / missing feature? How can i debug the apps?

=== edit ===

Using the GPSInfo app from Jolla market, I see that there are no values for speed and movement direction. Are these two sensors broken? How can I find out?

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That are no special sensors. For speed and movement direction you need a good GPS signal, it has to use at least 4 or 5 satelites... how many does GPSInfo show it is using?

balta ( 2016-07-22 09:52:15 +0300 )edit

I don't think there are no speed/accelleration sensors or no Gyroscope. https://jolla.com/tablet says: Sensors: Accelerometer / Light sensor / Gyroscope / Compass / Hall sensor

Could be that some of these are not included or supported due to death-valley-reasons, but I don't think so.

Even if you are right: Although having a good GPS signal (13-15 satellites), navigation and tracking is not working neither in HERE app nor in Google maps, nor in Komoot etc. All of these apps seem to wait for accelerometer/Gyroscope data instead of using GPS data to update your location.

=== update ===

Strange enough: After several reboots, GPSInfo gives me speed and gyro data, even with no satellite in reach. Komoot and HERE navigation are suddenly usable. I still wonder why they weren't, at first. Could it be that connecting my tablet to Jolla Phone Wifi Hotspot gets things mixed up? (But sensors should be working regardless of internet connection, or not?)

johas ( 2016-07-22 17:38:37 +0300 )edit

GPSInfo is getting speed and movement direction from the GPS information, so there is no other sensor involved (but the Jolla Tablet has this sensors anyways) Without a working internet connection it cannot use assisted GPS (AGPS) so if you connect it to the Jolla Phone the Lock will be much faster.

balta ( 2016-07-22 17:42:56 +0300 )edit

Thank you for the helpful information. Are there any apps making use of the accelerometer and gyroscope? Is this the same behaviour as on Jolla phone? (GPS tracking and navigation is working perfectly well there, and seemingly more accurate, too.)

johas ( 2016-07-22 19:18:56 +0300 )edit