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Can't select 4k//60 Ubuntu rx 460 driver amdgpu-pro-16.40-348864

Question asked by ghent360 on Nov 5, 2016
Latest reply on Apr 8, 2017 by tux4lyfe

Hi,

 

Running ubuntu 16.04.1, 64 bit kernel version 4.4.0-45. My display is Vizio D40u tv connected via HDMI 2.0 port. I was able to select 2160p mode, but it goes only to 30Hz.

 

This is the output from xrandr:

Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384

DisplayPort-0 disconnected (normal left inverted right x axis y axis)

HDMI-A-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis) 878mm x 485mm

   3840x2160     30.00*+  24.00    29.97    23.98 

   4096x2160     24.00    23.98 

   1920x1200     30.00 

   1920x1080    120.04   120.00   119.88    60.00    59.94    24.00    23.98 

   1600x1200     30.00 

   1680x1050     30.00 

   1280x1024     30.00 

   1440x900      30.00 

   1280x800      30.00 

   1280x720      60.00    59.94 

   1024x768      30.00 

   800x600       30.00 

   720x480       60.00    59.94 

   640x480       60.00    59.94 

DVI-D-0 disconnected (normal left inverted right x axis y axis)

 

However if I decode the EDID provided by the xrandr --prop it states that mode 97 is supported as well as mode 102. Both modes are 2160/60Hz.

I'm attaching the output of xranrd --prop.

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