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Is there any way of changing the gamma/contrast/brightness of monitor in Raspberry?

My Samsung 960BF doesn't have any hardware adjustment.

I tried using xbacklight and got error "No outputs have backlight property".

Gddccontrol also didn't work. Error: 

"I/O warning: failed to load external entity "/home/pi/.dccontrol/monitorlist"  
   Document not parsed successfully
   Probing for available monitors"

And nothing is happening.

I connected my monitor through DVI-HDMI cable. Maybe this is why it doesn't work?

I'm using Raspberry Pi B+ V1.2 with Raspbian.

Inkwizytor
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  • This is ot for [so], which is about programming. Please migrate your question to [su] or [Raspberry Pi](http://raspberrypi.stackexchange.com/) – umläute Jul 08 '15 at 09:01
  • @umläute Ok, thank you for that notice. I didn't know that this question doesn't suit here. – Inkwizytor Jul 08 '15 at 11:29

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