Hello Sebastien!
In an attempt to figure out the cause, I did the following:
1.) Launched from a Linux Mint flash drive - the applet works there.
2.) And in Windows also works.
3.) Launched Ubuntu from a flash drive - does not work.
upower -d
Device: /org/freedesktop/UPower/devices/line_power_AC0
native-path: AC0
power supply: yes
updated: Вт 16 апр 2019 10:43:43 (1616 seconds ago)
has history: no
has statistics: no
line-power
warning-level: none
online: yes
icon-name: 'ac-adapter-symbolic'
Device: /org/freedesktop/UPower/devices/battery_BAT0
native-path: BAT0
vendor: ASUS
model: 1215T
power supply: yes
updated: Вт 16 апр 2019 11:09:44 (55 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: charging
warning-level: none
energy: 58,9344 Wh
energy-empty: 0 Wh
energy-full: 58,9344 Wh
energy-full-design: 60,3376 Wh
energy-rate: 0,014032 W
voltage: 65,535 V
percentage: 100%
capacity: 97,6744%
technology: lithium-ion
icon-name: 'battery-full-charging-symbolic'
Device: /org/freedesktop/UPower/devices/DisplayDevice
power supply: yes
updated: Вт 16 апр 2019 09:45:03 (5136 seconds ago)
has history: no
has statistics: no
battery
present: yes
state: charging
warning-level: none
energy: 58,9344 Wh
energy-full: 58,9344 Wh
energy-rate: 0,014032 W
percentage: 100%
icon-name: 'battery-full-charging-symbolic'
Daemon:
daemon-version: 0.99.7
on-battery: no
lid-is-closed: no
lid-is-present: yes
critical-action: PowerOff
** Attachment added: "1.png"
https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1824886/+attachment/5256252/+files/1.png
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https://bugs.launchpad.net/bugs/1824886
Title:
Battery applet does not display battery charge.
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