[ThinkPad X1C6] Error: discharge BAT0 malfunction

[LinuxOnTheDesktop]

[x] I've read and accepted the Bug Reporting Howto

Describe the bug

$  sudo tlp recalibrate
Setting temporary charge thresholds for BAT0:
  stop  = 100
  start =  96
Error: discharge BAT0 malfunction.

Expected behavior

Reclibration, with no error messages.

To Reproduce

Steps to reproduce the unexpected behavior:

1. Does the problem occur on battery or AC or both?

AC; the relevant command is not intended to run on battery power.

2. Actions to reproduce the behaviour

sudo tlp recalibrate

3. Shell commands entered and their output

$ sudo tlp recalibrate
Setting temporary charge thresholds for BAT0:
stop = 100
start = 96
Error: discharge BAT0 malfunction.
4. Full output of tlp-stat via https://gist.github.com/ for all cases of 1

Instruction seems ambiguous. But here is output for ac and here is output for battery.

Additional context

Kernel: 5.0.2
OS: Linux Mint 19.1 x64
DE: Cinnamon
ThinkPad X1CG6

[linrunner]

Hi,

my X1C6 (current development machine for TLP) shows the same error – welcome to the club!

It occurs with tpacpi-bat and natacpi (kernel with patches for force_discharge). I guess the ACPI call 'BDSS' used for force_discharge was changed by Lenovo.

[LinuxOnTheDesktop]

Much as I dislike Lenovo for its near total lack of support for desktop Linux, I do find that, if I use tlp 1.1-2 (an older version), then the calibration works.

Also: may I ask whether you have the touchpad-stops-working-after-S3-sleep problem? For, tlp is one of the many ingredients in that problem? (And yes I do have the latest firmware for everything and a recent kernel and I have tried various - many - workarounds.)

[linrunner]

I do find that, if I use tlp 1.1-2 (an older version), then the calibration works.

To my considerable surprise: you're right. I'll look into that. Maybe a timing issue ...

[linrunner]

Well, i think i fixed it. See the above commit for details.

Please test – packages here.

[LinuxOnTheDesktop]

That seems to work: recalibration functions again. I did have trouble installing the .debs, though, probably at least partly because of bugginess in the gdebi installer.

[linrunner]

I keep this open as a notice.

[linrunner]

Released with 1.2.2

[frauhottelmann]

I do have the same problem on my X240 with tlp 1.2.2:
AC | battery

It occurs with BAT1. I don't have a BAT0 installed.

[linrunner]

@frauhottelmann : different hardware = different problem. Please open your own issue. I also need the exact command that failed and all of it's output.