Fedora 18 Resume and suspend scripts.. How do I do this.

[Kevin Daly]

Thank you for the information.

I've put some scripts in each of the directories that really make the
laptop work well so far ;)

Just in case others are having battery life problems with laptops
installing tuned an tuned-profiles-compat on the laptop, and putting this
script in the /etc/pm/power.d directory makes a big difference in battery
life.

#!/bin/sh
# 00-powermodes
case $1 in
    true)
tuned-adm profile laptop-battery-powersave
        ;;
    false)
tuned-adm profile balanced
;;
    *)  echo "ERROR: used incorrectly."
        ;;
esac

the file should name should start with 00 to 20 so I called my file
00-powermodes

As well I had a suspend and resume problem with the backlight on my Dell
XPS 13 (Intel GMA 4000).. after a suspend and resume, the backlight would
could not be adjusted, and was set to max brightness.

In order to fix this I put this script in /etc/brightness/fixbr.sh

#!/bin/sh
case $1 in
    awake)
echo "000" > /sys/class/backlight/intel_backlight/brightness
echo "200" > /sys/class/backlight/intel_backlight/brightness
echo "000" > /sys/class/backlight/intel_backlight/brightness
if [ -f /etc/brightness/brightness ]
then
br_val=`head --lines 1 /etc/brightness/brightness`
echo $br_val > /sys/class/backlight/acpi_video0/brightness
fi
        ;;
    suspend)
echo `cat /sys/class/backlight/acpi_video0/brightness` >
/etc/brightness/brightness
;;
    *)  echo "ERROR: used incorrectly."
        ;;
esac

What this does is saves the current brightness value and restores it when
the laptop is woken up or booted.. For some strange reason "poking" the
brightness in the first 3 lines of the awake case statement seems to fix
the brightness so that it can be then controlled by acpi_video0 properly..
Others might be able to modify this for other graphic chipsets by looking
in the /sys/class/backlight directory and seeing what the graphics chipset
that their laptop has uses.
/
Ok one last thing to get this working was I had to put a script in
 /lib/systemd/system-sleep called screenfix.sh

It looks like this

#!/bin/sh
case $1 in
    pre)
/etc/brightness/fixbr.sh suspend
        ;;
    post)
/etc/brightness/fixbr.sh awake
;;
    *)  echo "ERROR: used incorrectly."
        ;;
esac

I also set a link in the /lib/systemd/system-shutdown to screenfix.sh

ln -s
/lib/systemd/system-sleep/screenfix.sh /lib/systemd/system-shutdown/screenfix.sh

So now when the laptop is shut down or sleeps, it saves it's current screen
brightness :)

TAGS FOR GOOGLE: fedora brightness backlight laptop notebook power save.

Hope this will save people a lot of googling. Is this something that could
be submitted to the developers as patch?





On Fri, Mar 15, 2013 at 5:40 AM, Jaroslav Skarvada <jskarvad at redhat.com>wrote:

>
>
> ----- Original Message -----
> >
> >
> > I need to run a script that fixes a problem with the backlight on my
> > laptop..
> >
> >
> > The script works when I suspend and resume using pm-suspend from the
> > command line, but it does not work when I press the power button to
> > suspend or when I close the laptop lid..
> >
> >
> > Where are the event scripts for these events handled in the file
> > system.. I've tried to look for gnome-power-manager scripts and acpi
> > scripts, but I can't seem to find any information.
> >
> >
>
> Hi Kevin,
>
> on F18 the suspend/resume is handled by systemd and pm-utils scripts
> are no more called. There was filled bug about it [1], but it was
> rejected by systemd folks. Now you can put your scripts to
> /usr/lib/systemd/system-sleep/, see
> 'systemctl help systemd-suspend.service' for more information,
> hope this helps
>
> regards
>
> Jaroslav
>
> [1] https://bugzilla.redhat.com/show_bug.cgi?id=904221
> _______________________________________________
> power-management mailing list
> power-management at lists.fedoraproject.org
> https://admin.fedoraproject.org/mailman/listinfo/power-management
>



-- 
============================
Kevin Daly
(416) 953-8330
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