Comme la mise en veille fonctionne, alors le problème est moins grave :-)
Navigues dans les paramètres de gestion d'énergie et active la mise en veille, il peux y avoir plusieurs entrée relatives.
Aussi, il se peux que ça ne fonctionne pas. Alors, je te propose d'utiliser un script qui mettra en veille ta machine lorsque sa batterie faible. Si ta machine est toujours branché, honnêtement, laisse tomber, ne te prends pas la tête à corriger, tu risque tu créer plus de problème.
Script : il y a un peu de paramétrage à faire avec visudo et cron. Suis les instructions anglaises ci-dessous :
#!/bin/bash
# Notifies the user if the battery is low then supsend when critical.
# You can replace suspend with shutdown or hiberbate.
#
# First ensure that you can suspend non-interactively from cron without sudo :
# Execute : sudo visudo -f /etc/sudoers.d/custom
# Enter the following into the buffer and saved it :
# # Enable suspend from cron
# YourUserLogin ALL=NOPASSWD: /bin/systemctl suspend
#
# Then, schedule it via cron :
# chmod +x auto-poweroff.sh
# sudo crontab -e
# Add at the enf to execute every minute :
# * * * * * /path/to/auto-poweroff.sh.
#
# Tested succesfull on Ubuntu Mate 16.04 x64 with ASUS computer.
# This script is supposed to be called from a cron job.
# If you change this script's name/path, don't forget to update it in crontab.
# Credit to Anmol-Singh-Jaggi on GitHub
# Required for notify-send to work
eval "export $(egrep -z DBUS_SESSION_BUS_ADDRESS /proc/$(pgrep -u $LOGNAME gnome-session)/environ)";
# BAT0 with Ubuntu 16.04
level=$(cat /sys/class/power_supply/BAT0/capacity)
status=$(cat /sys/class/power_supply/BAT0/status)
# Exit if not discharging
if [ "${status}" != "Discharging" ]; then
exit 0
fi
# Percentage at which to show low-battery notification
low_notif_percentage=14
# Percentage at which to show critical-battery notification
critical_notif_percentage=11
# Percentage at which to power-off
action_percentage=8
if [ "${level}" -le ${action_percentage} ]; then
notify-send "Warning, Linux will be suspend because battery is too low: ${level}%" -t 15
sleep 5
# Sudo is required when running from cron
sudo systemctl suspend
exit 0
fi
if [ "${level}" -le ${critical_notif_percentage} ]; then
notify-send "Battery critical: ${level}%" -t 15
exit 0
fi
if [ "${level}" -le ${low_notif_percentage} ]; then
notify-send "Battery low: $level%" -t 15
exit 0
fi
