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 -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1824886 Title: Battery applet does not display battery charge. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1824886/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs