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+--- Thread: FIX: Little or no lcd backlight (/showthread.php?tid=8766)
FIX: Little or no lcd backlight - Schtromar - 01-13-2020
Just got my PBP! I love it, it's sleek as hell and a bajillion times lighter than my old HP.
One problem though: it decided to lose its backlight. I could just barely make out the shapes on the screen, but it was far from usable until I started looking around and found an interesting file: /sys/class/backlight/edp-backlight/bl_power
This might not work for you, but it did help me:
Code:
echo "0" > /sys/class/backlight/edp-backlight/bl_powerAll's well that ends well
UPDATE:
The problem came back after a couple of reboots. I guess having the lcd controller offline for a while might reset it? Anyway, my fix is simple:
open the crontab for root user:
Code:
sudo crontab -eadd the following line to the file:
Code:
echo "24" > /sys/class/backlight/edp-backlight/brightnessthis sets the brightness to 24 (out of 255 because 2^8=256) on every boot. You can replace 24 with any value between 0 and 255 (although I would not recommend 0)