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  1. Em alguns casos o GraphicsEnabler do Chameleon funciona para ativar o vídeo, porém a quantidade de VRAM aparece errada. Isso é apenas visual, mas para quem quiser acertar, aqui vai uma forma: Rode este comando no terminal para obter o string device-properties gerado pelo Chameleon: ioreg -lw0 -p IODeviceTree -n efi -r -x | grep device-properties | sed 's/.*<//;s/>.*//;' > ~/Desktop/device-properties.hex Converta para plist (coloque o gfxutil.zip no desktop) cd ~/Desktop ./gfxutil -s -n -i hex -o xml device-properties.hex device-properties.plist Edite a VRAM no device-properties.plist <key>VRAM,totalsize</key> <string>0x40000000</string> O valor está em hexa, pode converter para decimal usando a calculadora no modo programador, mas normalmente basta dividir ou dobrar o valor que você já conhece. Exemplos: 0x20000000 = 536870912 (bytes / 1024^2 = 512 MB) 0x40000000 = 1073741824 (bytes / 1024^2 = 1024 MB ou 1 GB) 0x80000000 = 2147483648 (bytes / 1024^2 = 2048 MB ou 2 GB) Converta o device-properties.plist editado para hex ./gfxutil -i xml -o hex device-properties.plist device-properties-new.hex Copie o string do arquivo device-properties-new.hex para a chave device-properties no arquivo /Extra/org.chameleon.Boot.plist <key>device-properties</key> <string>cole o string aqui</string> Desative o GraphicsEnabler (ou remova a opção) <key>GraphicsEnabler</key> <string>No</string> Para quem usa Clover o ajuste pode ser feito através da opção VRAM no config.plist <key>Graphics</key> <dict> <key>Inject</key> <true/> <key>VRAM</key> <integer>1024</integer> </dict> Fonte: Olarila