Had some free time recently, flashed a fresh ubuntu-touch-pinephone.img to a sd card, updated installation to Development channel, installed Dekko2 and - positive surprise - Dekko starts OK already at the first try 
Edit: was too optimistic - after phone "waking up from sleep" Dekko 2 still forces the UI restart...

Edit: was too optimistic - after phone "waking up from sleep" Dekko 2 still forces the UI restart...
My experience with Manjaro PlaMo: https://forum.pine64.org/showthread.php?tid=15300