I am a new user of Ubuntu. It was pre-installed in my new Dell desk top. I am very happy with Ubuntu. But I am having a problem with the brightness of the screen. I am not able to reduce the brightness using the slider in System settings > Brightness and Lock
My system specifications are as follows: Ubuntu 14.04 LTS Processor: Intel pentium (R) CPU j3710 @ 1.60 Ghz x 4 Graphics: Intel cherry view OS type: 64 bit Disk: 972.9 GB Monitor: Dell E1916HV
I checked the following folder: Computer > sys > class > backlight > acpi_video0 The 'backlight' folder has only one folder inside it: acpi_video0
Is it normal to have only one folder in the 'backlight' folder? I think the folder for the graphics card is missing, and it is causing the brightness.
Currently I am adjusting the screen using the following command at the terminal: xgamma -gamma .75
Please advise me how to solve this problem in the normal way. Thanks