On 07/16/2019 04:10 AM, andre_debian@numericable.fr wrote:
Hello,
ls -al /sys/class//backlight/ intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight
ls -al /sys/class/backlight/acpi_video0/ no file
xbacklight is installed.
To adjust the brigtness : Menu => Trinity Configuration Center => Périphériques => Hardware Device Manager => Backlight => Intel HD Graphics 520 and I can adjust the brightness from 0 to 100%, but the value is not keeped if I close the session. The default value = 62%
This is the situation.
This is where you can create a script to monitor intel_backlight and write the value out to, e.g. /usr/local/share/${USER}-backlight
cat /sys/class/backlight/intel_backlight/brightness > /usr/local/share/${USER}-backlight
Then simply create another script (linked within ~/.trinity/Autostart) that will restore the brightness level on trinity startup, e.g.
#!/bin/sh
savedbl="/usr/local/share/${USER}-backlight" sysfile="/sys/class/backlight/intel_backlight/brightness"
if [ -s "$savedbl" ] ## if saved backlight file exists then sudo sh -c "cat '"$savedbl"' > '"$sysfile"'" ## restore saved backlight fi
(just make sure the file is executable and that you have sudo privileges)