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help to get sapphire rx 580 to work on Catalina black screen after sleep at wake
i have the sapphire rx 580 8gb .just buy it. on Mojave works good on catalina I get it to boot in to it everything seems nice but sleep sometime gos in to it sometime not and the importnat thing is when at go to sleep , wake up is a drama no signal or black screen or freezes at login screen...