Reply To: Display brightness

The remote control installed without incident.

Following the instructions for changing display brightness I am getting a Permission denied error:

max2play login: pi
Password:
Linux max2play 4.4.47-v7+ #961 SMP Sun Feb 5 20:17:00 GMT 2017 armv7l

The programs included with the Debian GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Debian GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
pi@max2play:~ $ echo 128 > /sys/class/backlight/rpi_backlight/brightness
-bash: /sys/class/backlight/rpi_backlight/brightness: Permission denied

I tried to login as „root“ but that username was not allowed. Using the „sudo“ prefix also did not work.

• This reply was modified 7 years, 10 months ago by apakett.