Xrandr, gamma and framebuffer devices

Riza Dindir riza.dindir at gmail.com
Mon Nov 8 11:44:14 UTC 2021

Hello All,

I am using netbsd 9.2 with genfb. I wanted to adjuat the screen brightness
using xrandr. But it says failed to get gamma for output.

How to set the gamma value when using a framebuffer device?

Thanks in advance for your help.

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