I'm trying to fix my screen brightness problem, and I have checked some answers given on this site. I found out that I may have to use some command like this:
ls -la /sys/class/backlight/intel_backlight/ > lslabacklight
The problem is, while running this either with sudo or entered as super user su, I get an error saying permission is denied.
sudo ls -la /sys/calss/backlight/intel_backlight/ > lslbacklight
bash: lslbacklight: Permission denied
How do I make it work? I got the idea of doing this from here.
