Floris497 / mac-pixel-clock-patch-V2

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Hung at booting after CoreDisplay patch #296

Open yangliuyu opened 5 years ago

yangliuyu commented 5 years ago

My MacBook Pro is A1398 15 inch Early 2013, it has NVIDIA GeForce GT 650M 1024MB and Intel HD Graphics 4000 1536MB. OSX is 10.12.6 Sierra, I bought a miniDP to HDMI 2.0 active cable from amazon de which is Club 3D 1180, and my monitor is LG 4k 27UK650.

Monitor Description blocks:

Descriptor #0 - Timing definition:
Mode = 3840 x 2160 @ 60.000Hz
    Pixel Clock............. 594.00 MHz     Non-Interlaced

                            Horizontal      Vertical
    Active.................. 3840 pixels        2160 lines
    Front Porch.............  176 pixels           8 lines
    Sync Width..............   88 pixels          10 lines
    Back Porch..............  296 pixels          72 lines
    Blanking................  560 pixels          90 lines
    Total................... 4400 pixels        2250 lines
    Scan Rate............... 135.000 kHz         60.000 Hz

    Image Size..............  600 mm         340 mm
    Border..................    0 pixels           0 lines

        Sync: Digital separate with
            * Positive vertical polarity
            * Positive horizontal polarity

Before use CoreDisplay patch, I can get a 4k 35Hz with SwitchResX with less than 300MHz Pixel clock. Only CoreDisplay patch run successfully, Nvidia patch miss OSX 10.12.16 version. After reboot the system hung at apple logo loading. I have to boot with safe mode to restore the CoreDisplay file.

Is there any update step I missed?