1 Reply Latest reply on Apr 22, 2017 4:08 AM by peter@nixeus

    Samsung TV, 4k (4096x2160) @59hz, no over/undescan




      I've just installed a Samsung (55KU6400) 4K TV, linked to a RX 470 via HDMI 2.0 certified cable. The image is OK running at 3840x2160@59Hz.

      Once I set the res to the native settings (4096), the display is rendered inches bigger than the panel and there's no option within the Crimson drivers to fix this.

      Also, the VGA insists in setting the refresh rate to 59Hz instead of 60Hz (native).

      I'm using the latest Crimson drivers.


        • Re: Samsung TV, 4k (4096x2160) @59hz, no over/undescan

          Your Samsung 55KU6400 native resolution is not 4096.  It's native resolution is  3,840 × 2,160.  Your TV's EDID information is saying to default at 59Hz or telling the PC what is the detectable refresh rate.  If it is 60Hz it will show up as a 60Hz option in your Windows Display Settings.


          If the image is rendered inches bigger than your TV panel there is a setting in your TV to adjust the image - but at 4096 it may be interpolated or upscaled because your TV's native resolution and actual pixel count is 3840x2160.

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