Ubuntu – Bionic: Block Notification: laptop Battery Critically Low

18.04batteryguinotificationpower-management

Problem: My laptop battery is broken, it never charges. I have to use it at 0% battery and on AC power. Ubuntu 18.04, keeps giving me annoying notification every 5 seconds:

I know several questions have been asked on this topic, but this is specifically for about Ubuntu 18.04. I have tried solutions mentioned for older versions of Ubuntu but none of them work:

Modifying /etc/UPower/UPower.conf
Modifying dconf editor ->org -> gnome -> settings-daemon -> plugins -> power

I am surprised that these settings don't point to the same values? I can set different values in these and still nothing happens. Do these settings even work or are they deprecated?

Has anybody else faced this issue? It's very annoying.

Best Answer

I found these commands did the trick:-

~$ dconf write /org/gnome/settings-daemon/plugins/power/use-time-for-policy false
~$ dconf write /org/gnome/settings-daemon/plugins/power/percentage-low 0

you can check the dconf edit worked like so:-

~$ dconf dump /org/gnome/settings-daemon/plugins/power/
[/]
percentage-low=0
sleep-inactive-ac-timeout=3600
sleep-inactive-ac-type='nothing'
use-time-for-policy=false

@vanadium provided the correct keys and values to update. The keys were missing from my dconf but adding them seems to have solved the problem.

Related Solutions

Ubuntu – Won’t Hibernate when Battery Critical

I found another solution for my Ubuntu 14.04 system. Maybe it works for you.

First, install laptop-mode-tools

sudo apt-get install laptop-mode-tools

Then, you must enable the auto-hibernate function. You must edit a text file:

sudo gedit /etc/laptop-mode/conf.d/auto-hibernate.conf

There, look for ENABLE_AUTO_HIBERNATION parameter and replace the 0 with a 1:

ENABLE_AUTO_HIBERNATION=1

In the same file, you also want to adjust the battery charge percentage when the computer hibernates. For example:

AUTO_HIBERNATION_BATTERY_CHARGE_PERCENT=3

Save the file and test the configuration letting your battery discharge. If it works, you must set laptop-mode-tools as default, by creating a script:

sudo touch /etc/pm/sleep.d/10-laptop-mode-tools
sudo chmod a+x /etc/pm/sleep.d/10-laptop-mode-tools
sudo gedit /etc/pm/sleep.d/10-laptop-mode-tools

Then, in gedit, copy and paste this:

case $1 in
    hibernate)
        /etc/init.d/laptop-mode stop
        ;;
    suspend)
        /etc/init.d/laptop-mode stop
        ;;
    thaw)
        /etc/init.d/laptop-mode start
        ;;
    resume)
        /etc/init.d/laptop-mode start
        ;;
    *)
        echo Something is not right.
        ;;
esac

Save the file, then restart the system and test again. I hope that it works for you.

In my opinion, it looks like something is interfering with the the gnome-power-manager. If someone else reproduces the problem, then we can report a bug.

References:

Tips for save power by Penalvch https://help.ubuntu.com/community/PowerManagement/ReducedPower#Using_less_power_with_laptop-mode-tools

Re: Getting Ubuntu to automatically suspend on battery low (command-line) by Isamu715 http://ubuntuforums.org/showthread.php?t=2092327&p=12394451#post12394451

Best Answer

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Ubuntu – Won’t Hibernate when Battery Critical

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