I'm using s4 mini LTE I9195 with CM11 M6, f4ktion 1.4.0 kernel, BN3 modem, TWRP 2.7 recovery
All was working fine, average battery drain on idle was 1%-2% (not great, but fine), and suddenly it rocketed to drain 15%-30% per hour.
I usually use Android Tuner's battery measure stats to track drain statistics over time.
After checking it, I"ve noticed that it () the drain) started in the middle of the night.
So it's not due to "I launched this App, and then..." It just went nuts on it's own...
I've checked which process is to blame and the first one with max battery consumption is:
com.android.systemui (with KitKat logo) followed by Android System, then Screen, and then all the usuals.
I tried to do reboots, disable wifi/nfc/rotation/data/sync/anything else/kill user apps - no effect ...
It still drains about 20% per hour on system and systemui for the whole day now
And I have no idea what causing it / how to revert it...
So, do you have any suggestions on how to trace this bug?
What to search for in logs?
Any thing else?
I'm not a big pro on android OS subsystem, so advises are welcomed!