palegrand

yes - but I'll re-check. There are some options (e.g. 'Pause app activity if unused') I'm not familar with using older versions of Android or other brands of phones... I...

'Pause app activity if unused' and allowing NC to run in background all the time does NOT work: still crashes. Opposed to my first observations notes DOES crash even if...

do you mean the default Files ('Dateien') app of LineageOS? I did not think about this one... I'm excluding it from optimization at once!

that's the 'NC-client' app I suspected in the first place (since restarting it cures the problem temporarily) and I excluded it from battery optimization yesterday. Unfortunately the problem persists with...

I'm running LOS 20 on a OnePlus as well, so it should be similar ;-) what android-settings did you adjust for NC-app and notes-app? dav5x fails with _exactly_ the same...

Thanks. I'm Swiss, my phone is set to the same language as yours ;-) that is exactly what I did for both NC-app and Notes-app. Any other app to take...

To narrow down the problem I restricted communication to wifi only, set the sync interval of davx5 to the shortest possible time and compare 4 situations 1 davx5 2 davx5...

thanks for your support! it speaks for 'Notes' since I try hard to get it working on this device :-) 1-4 or 4-1 did not make a difference. but by...

- wifi only (disabling mobile data) ran fine for a day. davx5 ran perfectly as well - mobile data only (disabling wifi) ran mostly fine (two exceptions, vanished after refreshing...

just one. but I tried all combinations, even with just one sim (containing phone and mobile data) in either slot - same result. Very few crashes with wifi, quite frequent...