Keyboard back-light on at boot and resume
rosolko opened this issue · comments
Related to this post and solution
Workaround:
1: Save script to
/usr/local/bin/xps13-kbd-backlight
Make it as executable
sudo chmod +x <script>
2: Problem part
3: Link to /etc/pm/sleep.d
ln -s /usr/bin/xps13-kbd-backlight /etc/pm/sleep.d/20_xps13-kbd-backlight
A problem:
Partially this solution is working - if talking about back-light on resume, but on boot - I have no luck.
The problem is in this part of the solution:
using preferences set in ${BL_CONF}
[/etc/xps13-kbd-backlight]
How can I set this value?
As commented in my script,
https://askubuntu.com/questions/689907/dell-xps-13-9343-keyboard-backlight-on-at-boot-ubuntu-15-10/711291#711291
You have to edit files with its path in between [],
removing prefix #~ at begining of lines
resulting content of file [/etc/xps13-kbd-backlight]
(edited with command sudo nano /etc/xps13-kbd-backlight)
## 0 : off
## 1 : min
## 2 : max
default=0
current=1
resulting content of file [/etc/xdg/autostart/xps13-kbd-backlight.desktop]
(edited with command sudo nano /etc/xdg/autostart/xps13-kbd-backlight.desktop)
[Desktop Entry]
Version=1.0
Type=Application
Terminal=false
Exec=xps13-kbd-backlight
X-GNOME-Autostart-enabled=true
X-GNOME-Autostart-Phase=Initialization
Icon=keyboard
Name=xps13-kbd-backlight
Comment=set/restore xps13-kbd-backlight
Categories=Utility;
BL_CONF=/etc/xps13-kbd-backlight
can be set to another path at your convenience:
BL_CONF=/path/at/your/convenience
Well, create all of the files.
But, where should I set BL_CONF value?
What command should I use to set them?
Or what file should be changed to set value?
i want a script for each present:
backlight 100% on AC
backlight x% on BAT
(change it on the fly)
Maybe it's possible for TLP to add custom events.
/etc/pm/power.d/run_after_pwrmanagmt.sh
case "${1}" in
true) #battery_mode
xinput set-int-prop 12 277 8 2 3 0 0 1 3 2
echo 1 > /sys/class/backlight/intel_backlight/brightness
;;
false) #ac_mode
xinput set-int-prop 12 277 8 2 3 0 0 1 3 2
echo 937 > /sys/class/backlight/intel_backlight/brightness
esac
i do that
BL_CONF is set in the script in the first line behind the comments with # infront
https://askubuntu.com/questions/689907/dell-xps-13-9343-keyboard-backlight-on-at-boot-ubuntu-15-10/711291#711291
Ok I see.
But why I have no luck with restoring keyboard back-light on the OS start?
create a script that perform "echo 2 > /sys/class/leds/dell::kbd_backlight/brightness" at your os start as root, just simple, i'm happy with off as default and press fn+f10 if i need light on the keys
Can I just place this script into /etc/init.d to work?
use /etc/rc.local
The content of the /etc/rc.local now is:
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
echo 2 > /sys/class/leds/dell::kbd_backlight/brightness
rfkill block bluetooth
exit 0And the back-light is turn on by start :C
and you want to disable it on start? then change the value from 2 to 0 - 1 is for the 50% lightlevel
Just looking onto behavior of the content of the /sys/class/leds/dell::kbd_backlight/brightness in accordance with light options - seems like for turning off light respond 0 value.
Have no luck again even after changing value to 0.
PC start with maximum back-light brightness level.
but the command worked as root in terminal?
"echo 0 > /sys/class/leds/dell::kbd_backlight/brightness"
worked for me without problem
overlord@moon:~$ sudo echo 0 > /sys/class/leds/dell::kbd_backlight/brightness
bash: /sys/class/leds/dell::kbd_backlight/brightness: Permission denied
Little confused :|
sudo su
password
echo 0 > /sys/class/leds/dell::kbd_backlight/brightness
sudo su
password
echo 0 > /sys/class/leds/dell::kbd_backlight/brightness
In this case it's work.
so test the lines like:
echo 0 > /sys/class/leds/dell::kbd_backlight/brightness &
rfkill block bluetooth &
exit 0
in rc.local
echo 0 > /sys/class/leds/dell::kbd_backlight/brightness &
rfkill block bluetooth &
exit 0
Doesn't work.
One more question:
Relate to original script - we create and save as executable script to /usr/local/bin/xps13-kbd-backlight but later we create link to /usr/bin/xps13-kbd-backlight with /etc/pm/sleep.d/20_xps13-kbd-backlight is it correct?
@rosolko so did you solve?
@brunano21 Yes. After fresh system install this solution completely solve my problem. Complete solution and script available on askubuntu.
@rosolko do you refers to this?
Can you pastebin your script?
Because I have done like in the AskUbuntu thread, but still getting on when booting and resuming. :/
Also,
br1@br1-xps13-9343:~$ ll /etc/pm/sleep.d/
total 20
...
lrwxrwxrwx 1 root root 34 May 2 10:39 20_xps13-kbd-backlight -> /usr/local/bin/xps13-kbd-backlight*
...
Is it a matter of permission maybe?