https://www.google.ca/search?q=raspberry+pi+4K+driver&oq=raspberry+pi+4K+driver&aqs=chrome..69i57.13646j0j7&sourceid=chrome&es_sm=93&ie=UTF-8 https://www.google

https://www.google.ca/search?q=raspberry+pi+4K+driver&oq=raspberry+pi+4K+driver&aqs=chrome..69i57.13646j0j7&sourceid=chrome&es_sm=93&ie=UTF-8 https://www.google.ca/search?q=raspberry+pi+4K+driver&oq=ras... some of these links might deal with this