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Threema full-backup restore fails (app crash)

asked 2019-04-28 15:52:27 +0300

Spark gravatar image

updated 2019-11-27 16:56:23 +0300

jiit gravatar image

I am trying to restore a full backup of Threema (3.7) on Sailfish The backup includes all media and thus is 400 MB large. When I start the restore process inside Threema, the app minimizes and seemingly tries to unfold the backup in the background. But a moment later the app cover becomes transparent, so it basically crashes. When I tap the crashed cover the app restarts to the state before backup recovery. This occurs on Xperia X and on J1 the same way.

My suspects are:

  • insufficient RAM
  • aliendalvik being unable to handle multitasking features of android apps, i.e. android apps trying to minimize and run in the background.
  • some random bug

Possible solution approaches:

  • increase RAM allocation to aliendalvik (how? With no apps running I have ~2GB free RAM shown by lighthouse)
  • force app to stay in foreground (how?)

Who has experienced this or may give me an idea how to solve it?

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Try to grab a log via devel-su journalctl -fal and lxc-attach -n aliendalvik /system/bin/sh and using logcat

bomo ( 2019-04-28 16:31:13 +0300 )edit

I seem to have the same problem I'm pretty sure ram is not the issue, my backup is less than a MiB in size and it still crashes for me.

@bomo dalvik on J1 on xperia x is not lxc based and the journal does not seem to contain anything dalvik related.

Asseon ( 2019-07-24 00:30:34 +0300 )edit

2 Answers

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answered 2019-11-24 21:59:54 +0300

mke gravatar image

I have found a manual solution here:

It worked for me (restoring Threema version 4.2 from XA2 back to Jolla 1 including chats and configurations)

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answered 2019-11-26 12:26:34 +0300

jumPM gravatar image

updated 2019-11-26 12:27:34 +0300

I had the same problem with my Xperia X. After enabling the background service for Threema App in settings, the backup restore worked for me :)

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Asked: 2019-04-28 15:52:27 +0300

Seen: 312 times

Last updated: Nov 26 '19