High Sierra - 660ti graphics issues?

Discussion in 'High Sierra Desktop Support' started by rjohnst2, Sep 16, 2017.

  1. rjohnst2

    rjohnst2

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    Sep 16, 2017 at 1:26 AM #1
    rjohnst2

    rjohnst2

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    Hey all-

    I have updated to High Sierra, and everything is working great - EXCEPT, a bunch of artifacting and random screen "noise" on my desktop and windows. I have a Gigabyte UP5 TH Z77 and a Nvidia 660ti- any advice is welcome! I have already tried the NVRAM efi fix and the Nvidia driver hack, to no avail...videos work fine and apps seem to work fine, except for artifacting and checkboard effects after about 5-10 minutes
     
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  2. VioletDragon

    VioletDragon

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    Sep 16, 2017 at 1:27 AM #2
    VioletDragon

    VioletDragon

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    Verify that inject intel is set to false in config. Check that onboard iGPU is disabled in the BIOS.
     
  3. rjohnst2

    rjohnst2

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    Sep 16, 2017 at 1:53 AM #3
    rjohnst2

    rjohnst2

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    Done and done... thanks for the ideas, any others are welcome as well!
     
  4. VioletDragon

    VioletDragon

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    Sep 16, 2017 at 2:18 AM #4
    VioletDragon

    VioletDragon

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  5. rjohnst2

    rjohnst2

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    Sep 16, 2017 at 2:26 AM #5
    rjohnst2

    rjohnst2

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    Thanks again for your help- here you go! And just an FYI, everything worked fine with Sierra... this is a new problem with 10.13
     

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  6. VioletDragon

    VioletDragon

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    Sep 16, 2017 at 2:32 AM #6
    VioletDragon

    VioletDragon

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    Using incorrect SMBIOS. Should be using iMac 13,2 for your hardware. Graphics is showing under PEGP should be under GFX0. Native Powermanegement is not implemented.
     
  7. rjohnst2

    rjohnst2

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    Sep 16, 2017 at 2:53 AM #7
    rjohnst2

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    I know I’m using wrong SMBIOS- Mac Pro 6,1 worked best under Sierra because of audio popping issues with iMac SMBIOS... how would I change graphics from PEGP to GFX0? And what would I do do implement power management? Thanks!
     
  8. VioletDragon

    VioletDragon

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    Sep 16, 2017 at 3:03 AM #8
    VioletDragon

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    Popping issues with Audio are most likely caused by using wrong Nodes in AppleHDAinjector. Renaming PEGP to GFX0 is correct. Take a look at https://github.com/VoiletDragon/Z77X-UD5H-Clover-Hotpatch-Patches at ACPI, DSDT, Patches. Don't use Clover Configurator to add ACPI, DSDT, Patches to config it will destroy the config.
     
  9. rjohnst2

    rjohnst2

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    Sep 16, 2017 at 3:17 AM #9
    rjohnst2

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    So how would you recommend I fix my problems? Sorry to be such a noob but if you could spell it out that would be a big help!
     
  10. loganmelott211

    loganmelott211

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    Sep 16, 2017 at 3:29 AM #10
    loganmelott211

    loganmelott211

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    my nvidia gtx 660 ti is not working too
     

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