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joaoal
Asked: 2016-08-05 03:53:16 +0800 CST

Hibernation does not work, but what are my alternatives?

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A lot of people face the problem that hibernation does not work on common hardware devices that where designed for other OSes. Imho it is one of the most important issues that should be faced by developers since the lack of hibernation mode can cause serious data loss and hardware damage.

Since there is no software-fix to this problem in sight (as far as I know) I would like to ask you, what my alternatives could be and how to work around the problem of missing hibernation mode.

One of the main problems for me is the "ups-I-forget-my-laptop-was-not-connected-with-the-power-adapter"-moment e.g. when I come back from lunch and the laptop is shutdown because battery reached 0% (and all unsaved data has to be recovered).

I would welcome any pragmatic solutions from "stick a note to your laptop to remind you of your adapter" to existing software or self-made scripts that might alarm me or deliver a workaround (e.g. enter in sleepmode when battery is 15%) or similar. Automatic solutions that don't require my unreliable mental fitness are preferred however.

suspend

2 Answers

  1. Best Answer

    You can set up your user account to suspend on critical battery level using this terminal command:

    gsettings set org.gnome.settings-daemon.plugins.power critical-battery-action suspend

    Instead of suspend, these other actions would also be available: blank (screen off), shutdown, hibernate (if enabled and supported), interactive (you will get a pop-up asking you what to do), nothing and logout.

    You find out the currently set critical battery charge percentage using the command

    gsettings get org.gnome.settings-daemon.plugins.power percentage-critical

    To modify this value, (set to 10% in this example), run a command like that:

    gsettings set org.gnome.settings-daemon.plugins.power percentage-critical 10
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  2. You can use "acpitool" to find out the remaining charge percentage:

    $ acpitool -B|grep 'Remaining'
    Remaining capacity : unknown, 99.37%, 00:00:00

    Another example script to display a warning pop-up dialog on low battery:

    LOW=15
X=$(acpitool -B|grep 'Remaining'|sed -e 's/.*capacity : \([a-z]*, \)//' -e 's/%,.*//' -e 's/\..*//') && ([[ $X -lt $LOW ]] && zenity --info --text "Low Batterie: $X Please help !")
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