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Really I think the worst part of driving this monitor with plain displayport is that there's no way to control the brightness, just like the LG 5K.

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I have a LED Cinema Display (DisplayPort model) on Windows that surprisingly responds to Monitorian brightness control when I use current AMD drivers. I used to run a specific brightness control app for Apple displays, but have since ditched it.

(1) https://github.com/emoacht/Monitorian

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