Power Color 6900xt red devil does not work out of the box

After couple month of saving, I was able to buy a 6900xt today. Unfortunately, when I swap my current working 580 8G with my 6900xt red devil, my ryzentosh is no longer have graphic acceleration anymore. This is unexpected because I thought that 6900xt would work out of the box.

I'm stuck here. Is there any way to make it works? Thank you for reading.

submitted by /u/nam0122
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