[Info] Pinebook A64 Display Brightness at bootup with CLI-only-image

[guidol]

Normally when you have installed a XFCE-Desktop image for the Pinebook A64 you could set the display brigthness with the following pkexec command to a readable higher level - like I did in the past (possible brightness values are 1-10 - on startup this is only set to 2):

 

pkexec /usr/sbin/xfpm-power-backlight-helper --set-brightness 8

 

read-out command for the current value:

 

pkexec /usr/sbin/xfpm-power-backlight-helper --get-brightness

 

but on standard CLI-install pkexec and xfpm-power-backlight-helper are missing, so to use this command-line (in /etc/rc.local) you have to install these 2 packages:

 

sudo apt install xfce4-power-manager pkexec

 

[Gunjan Gupta]

quick look into xfpm-backlight-helper shows it is manipulating files in /sys/class/backlight. If the goal is to do it from /etc/rc.local, probably you can do the same as well.