Brightness level is fixed and not changing

Atish Pandey <[email protected]>
Newsgroups gmane.linux.debian.ports.amd64
Message-ID <[email protected]> 
I having recently installed Debian 8.6.0 Live Gnome Desktop on my Sony Vaio E-series VPCEH38FN. Almost all the devices are working correctly so far, except that the display is too bright and it is fixed. I am unable to change it from the brightness level control.The graphics card is nvidia Geforce 410MAny help would be appreciated.
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.