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ATI HD7850 Black Screen in High Sierra 13.6
Hi guys ,i have a problem with my graphics card ati 7850(1GB/Sapphire). 1. When I start the system in Safe Boot mode(Clover Bootarg=-x), the graphics card (HD7850) is running normally. 2. But when I start the system in normal mode,the system is blank screen.(I confirm that the signal output, see...