My computer on Ubuntu 21.04 shuts down unexpectedly, at random times. It shuts down while there is like more than 3 hours left until it gets drained completely, but once it gets to 50% and less of battery power, it shows then that there is left only less than 45 minutes, and then shuts down. The computer won't boot if I pressed the power button, until I plug it in.
I've tried switching back and forth between the NVIDIA driver version 390 and the one with latest version (470). I have also changed some settings in the /etc/default/grub file, trying quiet splash, removing it, adding nomodeset and then finally removing it and adding nouveau.modeset=0, but none seemed to work.
When I execute the command upower -i /org/freedesktop/UPower/devices/battery_BAT0, I get the following output:
native-path: BAT0
vendor: HP
model: Primary
power supply: yes
updated: Thu 28 Oct 2021 15:25:34 +01 (61 seconds ago)
has history: yes
has statistics: yes
battery
present: yes
rechargeable: yes
state: discharging
warning-level: none
energy: 34.3392 Wh
energy-empty: 0 Wh
energy-full: 34.3392 Wh
energy-full-design: 34.3392 Wh
energy-rate: 0 W
voltage: 11.604 V
percentage: 100%
capacity: 100%
technology: lithium-ion
icon-name: 'battery-full-symbolic'
History (charge):
1635431134 100.000 discharging
