It is supported but you don’t have the default kernel I think.
You can try if it works with your current kernel:
https://rocmdocs.amd.com/en/latest/Installation_Guide/Installation-Guide.html#supported-operating-systems 1
Or you can ask to the Ubuntu community forum how to reinstall the standard kernel:
  
      

      Ubuntu Community Hub – 23 May 21
  

  
    

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