How does the Energy KCM acquire its energy percentage graph information?

[rokejulianlockhart]

My mouse provides

However, my headphones don’t appear to

(if you’re thinking of getting some of the same, they’re expensive, but awfully unreliable).

I’m thinking of getting some https://www.amazon.co.uk/Fairbuds-Wireless-Cancelling-Headphones-AUHEAD-1ZW-WW1/dp/B0C533HH7Z as a replacement, so would like to ask at Topics tagged fairbuds-xl whether they would provide the capability which that image demonstrates.

Consequently, considering that it’s already been implemented in that KCM, does anyone know specifically which capabilit(y/ies) I’m looking for, or whether it’s merely a matter of driver support?

[jsalatas]

@rokejulianlockhart

How does the Energy KCM acquire its energy percentage graph information?

It uses upower. The history data are stored in /var/lib/upower directory

@rokejulianlockhart

However, my headphones don’t appear to

if this is a bluetooth device, maybe the following might help

Check Bluetooth headphones battery status in Linux

[rokejulianlockhart]

@jsalatas

@rokejulianlockhart

How does the Energy KCM acquire its energy percentage graph information?

It uses upower. The history data are stored in /var/lib/upower directory

@jsalatas, do you know what would decide whether a specific device has its history recorded? As the images aforeposted should demonstrate, I can see the battery percentage of my headphones. Those values are merely not recorded/exposed as a historic graph via the KCM.

I don’t see anything obviously relavant to this specifically in Check Bluetooth headphones battery status in Linux - Ask Ubuntu.

[jsalatas]

@rokejulianlockhart

@jsalatas, do you know what would decide whether a specific device has its history recorded? As the images aforeposted should demonstrate, I can see the battery percentage of my headphones. Those values are merely not recorded/exposed as a historic graph via the KCM.

I have no idea! Sorry