Intermittent Authentication Failure for google services

• /e/ version: 0.17-20210615117215 & others
• Device model(s): Fairphone 3
• Device rooted: yes

Summary

I'd like to tag the thread at https://community.e.foundation/t/authentification-failure/26755/7 for better visibility. Also, I can contribute at least a first bit of debug information.

In brief, the problem is that authentication for google services (mail, calendar, address book) fails intermittently. The thread only contains reports of Fairphone users.

The problem

Steps to reproduce

Add a google account on the phone and wait.

What is the current behavior?

From my own observations, periods of relative quietness alternate with periods of Authentication failures every few minutes.

It's NOT a permanent condition. After a few errors, things return back to good.

The failures seem to be for all (automatically configured) applications, i.e. mail, calendar and address book.

What is the expected correct behavior?

No authentication failures, login works all the time.

Technical informations

Relevant logs (adb logcat)

I managed to get some debug information for one failure, where it seems that the google server returns 401.

HTTP RESPONSE:                                                                  
 11 Response{protocol=h2, code=401, message=, url=https://apidata.googleusercontent.com/carddav/v1/principals/xxx.yyy@gmail.com/lists/default/}

In the attached log debug.txt, there are the debug information from one event, and adb logcat from around the time of another.