Regression: QField loses connection to GNSS when tracking

[bladnor]

What is the bug or the crash? What were your expectations and what actually happened?

QField loses connection to an external GNSS during tracking very often. Today a customer complained that the connection to the external gnss gets lost during tracking. Sometimes when tracking starts. Sometimes when tracking stops and sometimes during tracking. I repeated the test with our own equipment. I got the same errors several times. In my case the connection got lost immediately after clicking "start tracking". This is a regression to previous versions. Hope you can fix this regression very soon.
This problem does not appear during non-tracking digitizing.

Steps to reproduce the issue

Start tracking on a line layer
Configure tracking
Click on "start tracking"

Version

4.0.5

Operating system name

Android

Operating system version

13

Reinstall QField

• I have a fresh install of the latest QField version, but the problem persists.
• Problem can be reliably reproduced, doesn't happen randomly.
• Problem happens with all files and projects, not only some files or projects.

Additional context

No response

[nirvn]

@bladnor , do you know when that started to be an issue?

[bladnor]

@nirvn unfortunately not.

[bladnor]

@nirvn We got a call today from a customer asking if there is a solution for this. Did you already build and release a new version with this fix to the app stores? If not by when do you plan on releasing it?

[nirvn]

@bladnor , could the customer try the APK within this PR (#7046) and confirm it works well there?

ATM the plan is to release that fix with the next QField version (4.1) in mid March. But if we can get more testing, including from this customer, and confirm it's safe to backport, that's very doable.