sony-vaio-z-series team mailing list archive

[Bernd Eggink <monoped@xxxxxxxxxx>]

Kim Lindberg schrieb:

> Just wanted to ask about some things I've had troubles with lately. 
> Maybe someone has some tips.

> 2) Dim and brightness behavior bugs me generally. I have set screen to 
> dim after idle to save battery, which works fine. But the brightness 
> does not reset to previous level when going back. I think what does is 
> to set the brightness level according to gnome power settings.

I don't know Fedora, but the trick is to save the video state before 
suspend and restore it after resume.
You could try he following: Look into /etc/acpi/actions and locate the 
script which handles the "button/lid" event. Insert the following lines 
from my suspend-to-ram script before the suspend command (which must be 
something like "echo mem > /sys/power/state"):

-----------------------------------------------------------------
case $(</sys/devices/platform/sony-laptop/speed_stamina) in
(stamina)   videoId=00/02.0
            ;;
(speed)     videoId=01/00.0
esac

# Save video state in videofile

videofile=$(mktemp /tmp/video_state.XXXXX)
trap 'rm -f $videofile' 0 1 15
cat /proc/bus/pci/$videoId > $videofile
-----------------------------------------------------------------

and insert this after the suspend command:

-----------------------------------------------------------------
cat $videofile > /proc/bus/pci/$videoId
rm -f $videofile
-----------------------------------------------------------------

I the script is too confusing, you could send it to me and I could have 
a look at it.

Regards,
Bernd

--
Bernd Eggink
http://sudrala.de