21 Sep
2021
21 Sep
'21
7:50 a.m.
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