Android

Why I’m moving from Baikal to Radicale (CalDav & CardDav)

Saber/Dav which is a core component of Baikal is looking for maintainer (full story here)

It’s been some time now that I moved from Google Calendar service to self-hosted, open source solution.

I never notice any down sides with accessibility – maybe my need were simple enough 🙂

 

I’m not saying that Baikal is dead, if your are interested in Baikal fell free to lookup those posts (installation, updating)

 

As for me I started noticing one minor issue I had with Baikal, that is complicated calendar sharing setup – it IS possible to share calendars but its more complicated than it should be, it was announce that sharing will be added later after big code rewrite and I waited (because I wouldn’t even be able to contribute to php7.0+silex anyway), but here I found new solution… Radicale, it also don’t support sharing calendars via web-panel, but for me it got one BIG advanted in sharing zone, user rights, and with one little ACL list I was able to share whatever I wanted.

None of both solution support migration tools for this process so It was a bit of pain (as for now I wasn’t able to find too that would migrate my ‘Tasks’ from calendar, but I never used it as much and migration was done by hand with me clicking 2 buttons on each of 20 tasks I had left)

 

If you are interested, here are links related to process of installing, configure and migrate data from one solution to other:

  • Links coming soon
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Bootloop into recovery after flashing custom firmware

Sometimes you get loop into recovery after flashing custom rom, there is a simple solution to this:

 

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Dovecot – Proper IDLE timeout for android phones

If you are using your own imap server with android you could (but not nesesery) notice bigger battery drain and email application being on top of application that drain battery.

This could be a server side problem, because default dovecot configuration have idle_timeout set to 2minuts, so basicly every 2 minuts your phone query/poll imap server information about new emails – which results in higher battery drain.

Lets evalueate this with simple shell command:

This should result i:

The interval between each ‘OK still here’ is that your imap clean see/does. By default this should be 2minut interval.

Let us change this:

systemctl restart dovecot.service

And we are done.

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Google Authenticator – manual backup and restore

If we have ROOT access we can manualy backup the file that contains seeds needed to generate password in application.

Backup: You need to set ROOT access for ADB, and then:

The content of the file can be display with help of sqlite client application:

The above method can be done with file manager that can get ROOT access

Restore backup: You need to set ROOT access for ADB, and then:

The above method can be done with file manager that can get ROOT access and copy databases file to:

Also remember to set ownership for proper application user (com.google.android.apps.authenticator2) on this file, because with wrong one (root) the application will crash every time you try to open it.

 

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