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  1. Kallator

    Radeon RX 580 Sapphire 8GB Black Screen.

    Yes, tried almost every SM, mostly same effect, boot til Apple logo, then switch to black screen on HDMI & DVI while OS is accessible thru screen sharing
  2. Kallator

    Radeon RX 580 Sapphire 8GB Black Screen.

    About to give up on this one, no matter what i choose in config either crashes the system or has no effect at all, maybe my mb is finally too old or i'm too stupid after all :thumbdown Is ther anyone out there using a Gigabyte GA-H61N-USB3 with a metal-compatible graphics card?
  3. Kallator

    Radeon RX 580 Sapphire 8GB Black Screen.

    Yes, these are my system specs, the machine is quiet old i'm afraid. Had a lot of issues in the past, switching from chameleon to clover, no sound, trying UEFI until i found out my board does not support that, unable to connect 2nd harddisk with HS, and so on... Will give your EFI a try on...
  4. Kallator

    Radeon RX 580 Sapphire 8GB Black Screen.

    tried 13,1 / 14,2 / 18,2 / 18,3 with 14,2 board-ID, with and without lilu/wg, nothing seems to work iGPU is set to 'only when no PEG' @markmac 6,1 is a macbook? i'll give that a try later @Pavo i uploaded my EFI folder and the exported system specs
  5. Kallator

    Radeon RX 580 Sapphire 8GB Black Screen.

    I had High Sierra with 17,1 and HD 6870 without problems, downgraded to 14,2 'cause someone noted that might work, but no luck! Will try 13,1 later, and try 14,2 Board ID (Mac-27ADBB7B4CEE8E61) with your iMac18,3 as P1LGRIM mentioned, though have only DVI and HDMI, no DP adapter available at the...
  6. Kallator

    Radeon RX 580 Sapphire 8GB Black Screen.

    - It is a Gigabyte Aorus Radeon RX 580 8GB - which 'system specs' do you need exactly? - i'll upload my folder as soon as i can and thx for the fast reply!
  7. Kallator

    Radeon RX 580 Sapphire 8GB Black Screen.

    Same black screen problem here - purchased a GA RX580 in exchange for my old HD6870 to be able to use Metal (WoW needs it now, and Mojave of course). Installation without problems, but when i start the system i get that annoying black screen after the Mac logo + loading bar screen. The system...
  8. Kallator

    Boot to black screen after update to RX 580

    I got myself a GA RX580 in exchange for my old HD6870 to be able to use Metal (WoW needs it now, and Mojave of course). Installation without problems, but when i start the system i get that annoying black screen after the Mac logo + loading bar screen. The system does not stop, as i am still...
  9. Kallator

    [Solved] Hight Sierra unable to mount 2nd HDD

    thx, i updated my profile and will check the links Update: Installing the 328 kext manually killed my system, by removing the file via USB on an different Mac and running the setup several times i was able to repair the installation, but still no secondary HDD. Using KextBeast did the thing...
  10. Kallator

    [Solved] Hight Sierra unable to mount 2nd HDD

    I finally managed to install High Sierra on my old machine after what felt like a hundred tries. I had near to no problems with Sierra, but now i am not able to mount my secondary HDD. - Board is a Gigabyte GA-H61N-USB3 - Primary harddisk is a Kingston SSD, secondary a WD 1TB HDD - after login...
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