Not able to confirm health mode status

[SV-stark]

Not able to confirm health mode status

cat health_mode
cat: health_mode: No such device

and

sudo echo 1 >> health_mode
zsh: permission denied: health_mode

No text editor including vim and nano can open the file.

[maxco2]

Please confirm that you have a matching WMI method on your device.

The output of the following command should contain the WMI GUID 9772EC5-04B1-4BFD-843C-61E7F77B6CC9

 sudo fwts wmi -

Ref:
https://wiki.ubuntu.com/Kernel/Reference/WMI

[SV-stark]

Terribly sorry that I forgot to mention that I am using Manjaro. Is there any other way to get this WMI GUID?

[maxco2]

Terribly sorry that I forgot to mention that I am using Manjaro. Is there any other way to get this WMI GUID?

fwts-git is in AUR.

[SV-stark]

Thanks for directions. I didn't see the GUID you mentioned, but I did see a match 79772EC5-04B1-4BFD-843C-61E7F77B6CC9 which I suppose is of no use.
Also additionally me laptop is Acer Aspire A515-51G (UN.GWJSI.006)

[maxco2]

I'm not sure if this GUID is battery health control. Please be careful.

[rybomir]

Hey @maxco2, I'm facing a similar issue - I've found a match for 79772EC6-04B1-4BFD-843C-61E7F77B6CC9, which seems to differ by one digit from @SV-stark's. Echoing health_mode doesn't seem to have any effect, it stays empty. I'm on Aspire VX5-591G-58TC.

However, I've noticed that you probably made a typo:

The output of the following command should contain the WMI GUID 9772EC5-04B1-4BFD-843C-61E7F77B6CC9

In reality acer_battery_wmi.c contains 79772EC5-04B1-4BFD-843C-61E7F77B6CC9, so... It should have worked for @SV-stark? Unless I'm missing something obvious here.

PS. Output of sudo fwts wmi - :

Low failures: 1
wmi: GUID 79772EC6-04B1-4BFD-843C-61E7F77B6CC9 should have an associated method WMBF defined, however this does not seem to exist.

[maxco2]

@rybomir Sorry for not getting back to you sooner. My laptop "fwts" is also output 79772EC6-04B1-4BFD-843C-61E7F77B6CC9 which is not the battery health control GUID. If you have a Windows system, maybe you can do some reverse engineering on Acer Care Center which is written in C#.

[rybomir]

@maxco2 Ok, so, curious thing - since my last comment I've reinstalled the OS (EndeavourOS before, Fedora now), and it looks like the correct GUID just... appeared?

However, this didn't resolve anything, echoing health_mode with "1" still doesn't have any effect. Any ideas?

dmesg output after echoing:

[   45.041742] Unexpected output format getting battery health status, buffer length:4
[   58.198921] Setting battery health status success! Status was 0 ret was 0x0 (0)

[maxco2]

@rybomir

Judging from the dmesg log, setting the battery charging health threshold is successful, but failing to obtain the status. Maybe you can try charging it to see if it works.