Notify when battery is low at 15%, and notify again when critically low at 5%

[Amr Ibrahim]

According to the upstream bug, power notifications are done by gnome-settings-daemon and the decision whether a battery is considered "low" or "critical" happens in UPower.
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What should happen:

I should be getting two notifications currently:

"Battery Low" or "Laptop battery low" usually set to 10%
"Battery critically low" or "Laptop battery critically low" at 3%

The laptop should then suspend to disk at 2% (or power off as that is usually not possible).
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What happens instead:

I get one notification when the battery is at 5% and it doesn't say that the laptop is going to suspend to disk.

I believe that is sub-optimal especially when I'm not looking at the battery status, in the case of a full-screen video or game.

It would be better to give a first (yellow coloured) notification at low battery 15% and a second (red coloured) notification at critically low battery 5%. My Android phone does that for example.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-settings-daemon 3.28.1-0ubuntu1.2
ProcVersionSignature: Ubuntu 4.18.0-21.22~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-21-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Jun 10 19:44:08 2019
InstallationDate: Installed on 2018-11-29 (193 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: gnome-settings-daemon
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Looking to the upstream report, it looks like an hardware issue that the submitter's battery isn't discharging in a linear way and skipping between levels

[Andreas Haferburg (andreas-haferburg)]

If that is the underlying cause I wouldn't call it a hardware issue, I would call it an implementation oversight.