Hi,
Extending battery life (which in turn helps us squeeze juice out of it for
longer running times) is a pretty usual requirement. Thnx for the idea
though! =)
checked the below by parts, worked in lenny. Please check in ubuntu. Script
might need some tuneup/corrections. Please feel free to addup/correct as
needed. Running this as part of login should do. (put in profile.d /
somewhere. using a flagfile to see if an instance of this script is already
running can help in ensuring that only one instance runs)
#!/bin/bash
########################################################################################
export flagval=0
while [ $flagval = 0 ]
do
export st=`grep -w "charging state" /proc/acpi/battery/BAT0/state |awk
'{print $3}'`
# if not on AC power, it will be 'discharging'; 'charging' upon being
charged
# and 'charged' upon completely charged.
# however, battery has to have been calibrated before once, else this
might not be a proper signal.
if [ "$st" = "charged" ]
then
echo -en "Calling screenlocker , fire a notify daemon script with
custom message"
# notify-send will be part of libnotify-bin package, usually not
installed by default in debian/ubuntu.
# Please install the same through apt if its notin the machine.
notify-send -t 65535 "Battery is fully charged. PTP, the power plug
!!! "
gnome-screensaver-command -l
flagval=1
else
curtim=`date `; echo "[${curtim}] : still charging " >>
/tmp/batstat.log
fi
done
curtim=`date `; echo "=== DEBUG: batstat script ends. [${curtim}] ===" >>
/tmp/batstat.log
########################################################################################
# the above listing keeps running till battery is fully charged, upon which
a notification is thrown and screen
# locked, prompting him for password, and upon login keeps the notification
active.
# _raghava_ , on April 19, 2009.
########################################################################################
Hope this helps! As said before, please feel free to refine/add up as
suitable. =)
On Sun, Apr 19, 2009 at 9:59 PM, Sindhu S <[email protected]> wrote:
>
> Hi all!
>
> I own a Asus EEE 1000H (160GB HDD) and am very particular about the
> battery discharge, I unplug from AC power as soon as it charged 100%
> as from my previous experience with my Compaq laptop I learnt that
> keeping any netbook/laptop plugged in on AC power all the time causes
> battery life to deplete rapidly.
>
> This summer I have quite some time on hand and i figured maybe I could
> device a way in which I can prevent this battery drain.
>
> So I was thinking as soon as my "program" reads that ACPI is reporting
> battery status as 100% charged, I lock the screen, forcing the user
> (me) to unplug the AC cord and unless the power cord is unplugged the
> screen won't be unlocked.
>
> Low battery status is notified properly for me by "power
> management" (am on Gnome on Jaunty Beta) but full status of the
> battery is sometimes notified or sometimes I miss it as a result of
> being away from the netbook.
>
> I don't know how to get started, am confused as I don't know how the
> internals of ACPI work...like would it be right to assume that acpi
> sends out a notification when battery has been charged 100%? so that I
> can make use of this notification and lock the screen ?
>
> Can I write my "program" as a shell script?
>
> I don't have any experience programming under Gnome, so can you guys
> please help out with suggestions/ideas?
>
> Thank you! :)
> >
>
--
Regards ,
Raghavan K S
99860 31265
Mysore.
http://raghavan.vinay.googlepages.com
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