Reply To: Display brightness

16. February 2017 at 21:45 #26999

The remote control installed without incident.

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

max2play login: pi
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.
[email protected]:~ $ 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 6 months, 1 week ago by  apakett.