Hello. I have followed this guide >>
https://www.tonymacx86.com/threads/black-screen-after-wakeup-and-strange-audio-issue.235325/page-2#post-1628292">Black screen after wakeup, and strange audio issue a little bit but some of the process is different:
1. Extract vanilla EDID (I used EDID Manager from windows, I don't know if there are any mac alternative)
2. Patch the vanilla EDID using
FixEDID
-Open extracted vanilla EDID
-Select only Inject EDID Unpatched
-Checked Add/Fix Monitor Ranges
-Click Make
View attachment 303058
3. Open the file
DisplayProductID-XXXX file with plist editor. The file was generated by
FixEDID that was placed in Desktop with folder name
DisplayVendorID-XXX
4. Take note of the 21st bit of IODisplayEDID and replace it with any of these except the previous value
B5,
95,
A5(these values are the ones I get when patching using iMac, MacbookAir, MacbookPro)
-- example, for me the patched vanilla is:
Code:
00FFFFFF FFFFFF00 4C834455 00000000 00190104 A5221378 0AE72599 59568E28 1E505400 00000101 01010101 01010101 01010101 0101D237 80A27038 40403020 250058C2 10000019 372580A2 70384040 30202500 58C21000 00190000 00FD0038 4C1E5311 000A2020 20202020 00000002 000C3FFF 0C3C7D1E 18327D00 0000001C
I have replaced it with
95 and as a result, no more graphics glitch on startup, also no more boot glitch effect:
Code:
00FFFFFF FFFFFF00 4C834455 00000000 00190104 95221378 0AE72599 59568E28 1E505400 00000101 01010101 01010101 01010101 0101D237 80A27038 40403020 250058C2 10000019 372580A2 70384040 30202500 58C21000 00190000 00FD0038 4C1E5311 000A2020 20202020 00000002 000C3FFF 0C3C7D1E 18327D00 0000001C
5. Put the new EDID in
config.plist>Graphics>EDID>Custom, and also Inject as YES:
View attachment 303060
6. Try booting, if glitches are gone, check your bdmesg on terminal if there are any automatic patches that was done by clover on your EDID and correct your EDID. normally on my experience, the last bit was patched by clover so I updated my Injected EDID to match the clover patched EDID.
View attachment 303063
7. Video of booting with EDID patched & EDID Unpatched(i'll pm if you want):