Re: tde powersave: looking for a hook ..

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On Tuesday 21 September 2021 01:54:30 am Dr. Nikolaus Klepp wrote:
> Hi all!
>
> Is there a way to tell if TDE has just turned on the display after sending
> it to sleep? Maybe a hook, a program, whatever?
>
> Reason is that on a T460 the backlight control needs to write the brigtness
> value twize to restore it to its inital value after DPMS turned the display
> off, otherwise it's at ~ 50% and the user needs to increase the value
> manually - which is espectially anoying on these Notebooks when the primary
> function of the function keys is "be a function key".
>
> My workaround for now is "xset dpms 0 0 0: xset s off" - which does a fine
> job in keeping the display lit, but TDE cannot send the display to suspend
> as this also needs written 2 times to actually work. The fun part is that
> when the display is fully lit then the the user only need one write cyle to
> change the brighness.

Hi Nik,

Until someone gives a real answer, try playing with these:

xrandr
redshift [1]
dcop ??
use a script to suspend the display? [2]

Maybe that'll help?,
Michael

[1] Some old code from when I was playing with redshift:

RedshiftFullInfo=$(redshift -pv)
echo -e "Full:\n $RedshiftFullInfo\n"

RedshiftCurrInfo=$(redshift -p)
echo -e "Curr:\n$RedshiftCurrInfo\n"

echo
Temperature=$(echo "$RedshiftCurrInfo" | grep -i 'Color temperature:' | 
awk '{print $3}')
echo "Temp: $Temperature"

Brightness=$(echo "$RedshiftCurrInfo" | grep -i 'Brightness:' | awk '{print 
$2}')
echo "Bright: $Brightness"

[2] I attach this to an icon in my panel.
# cat goodnight
#!/bin/bash

dcop kdesktop KScreensaverIface lock
sleep 3
xset dpms force standby
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