[Solved] Battery indicator not functionning

[Damie-C]

Good morning good folks,
I installed yesterday LMDE, the battery indicator indicates the battery is either charging from 0% or that the battery is absent.
Yet it works also when I unplug the computer (albeit it slows the machine).
inxi -Fxz
gives:

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Battery:
  ID-1: BAT0 charge: N/A condition: N/A model: N/A status: Unknown 

The computer is an Asus R558U, the battery indicator was working fine on LM 16, 17 18 and 19.
Couldn't find elsewhere what is happening, taking all recommendations! Best,
D

[antikythera]

Mine does that if I use backport firmware and kernel 5.4. If I stick with the default kernel 4.19 series it's fine. The reverse may work for your newer laptop. Take a snapshot with Timeshift before proceeding. Check EVERYTHING works after applying a kernel change. The below will get you Kernel 5.7:

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apt update && apt install -t buster-backports linux-image-amd64 -y && apt install -t buster-backports linux-headers-amd64 -y && apt install -t buster-backports firmware-linux firmware-linux-nonfree -y && reboot

[Damie-C]

thanks a lot antikythera, that did it!