Crossfire doesnt show in the amd radeon software. Drivers are up to date. Do i need to change something in bios? Mobo : b360 plus prime cpu : i5 8400 ram 8gb 2666mhz gpu 2x rx 580 8gb
did AMD still supporting crossfire with their latest driver? i'm not 100% sure about this but AMD pretty much drop CF when they launch Navi mid last year.
officially AMD is done with CF. going forward CF (on older card where CF still applicable unlike R7 and Navi) might having more issues and AMD most likely have no intention to fix it. have you tried using older driver especially from early 2019?