Black screen after wakeup, and strange audio issue.

[xworm]

Sounds like a new problem in 10.13 then.

Thanks Rehabman,

Resolved by putting modified EDID related file into S/L/Display/Content/Resource/Override,

 

[RehabMan]

Thanks Rehabman,

Resolved by putting modified EDID related file into S/L/Display/Content/Resource/Override,

Perhaps you should write a guide regarding what you did.
And maybe you can use config.plist/Graphics/EDID/Inject=true, Graphics/EDID/Custom=<modified edid data>.

 

[xworm]

Perhaps you should write a guide regarding what you did.
And maybe you can use config.plist/Graphics/EDID/Inject=true, Graphics/EDID/Custom=<modified edid data>.

Yes, just as you said, I tried Clover EDID injection, but it doesn't work, and I found EDID not changed in IORegistryExplorer. that's strange.

later, I'll post here what I've done

thx!

EDIT:

for those who have similar wakeup issue:

1.Get vanilla EDID

2.Find the 21th word, (95 in my case: 00 FF FF FF FF FF FF 00 06 AF 3D 12 00 00 00 00 00 17 01 04 95 1F …)

3.Replace it with a Apple screen’s value(get from FixEDID - MBP worked in my case,MBA not.)

4.Create folder(with file) under /System/Library/Displays/Contents/Resources/Overrides with modified EDID.

5.Reboot & test

I don’t know why it worked

BTW, according to edid description, that word is “Video Input Definition”

 

[khalidchawtany]

Could you please make a detailed tutorial with screenshots?
I am really confused and I have the same problem

 

[khalidchawtany]

I don't get third step. Where is MBP EDID is shown?

 

[RehabMan]

Yes, just as you said, I tried Clover EDID injection, but it doesn't work, and I found EDID not changed in IORegistryExplorer. that's strange.

later, I'll post here what I've done

thx!

EDIT:

for those who have similar wakeup issue:

1.Get vanilla EDID

2.Find the 21th word, (95 in my case: 00 FF FF FF FF FF FF 00 06 AF 3D 12 00 00 00 00 00 17 01 04 95 1F …)

3.Replace it with a Apple screen’s value(get from FixEDID - MBP worked in my case,MBA not.)

4.Create folder(with file) under /System/Library/Displays/Contents/Resources/Overrides with modified EDID.

5.Reboot & test

I don’t know why it worked

BTW, according to edid description, that word is “Video Input Definition”

What value did you use in replacement of the '95'?

 

[xworm]

What value did you use in replacement of the '95'?

replace it with A5, that's the value of MBP's EDID

 

[abanerjee]

Yes, just as you said, I tried Clover EDID injection, but it doesn't work, and I found EDID not changed in IORegistryExplorer. that's strange.

later, I'll post here what I've done

thx!

EDIT:

for those who have similar wakeup issue:

1.Get vanilla EDID

2.Find the 21th word, (95 in my case: 00 FF FF FF FF FF FF 00 06 AF 3D 12 00 00 00 00 00 17 01 04 95 1F …)

3.Replace it with a Apple screen’s value(get from FixEDID - MBP worked in my case,MBA not.)

4.Create folder(with file) under /System/Library/Displays/Contents/Resources/Overrides with modified EDID.

5.Reboot & test

I don’t know why it worked

BTW, according to edid description, that word is “Video Input Definition”

Could you upload the file plz?

 

[khalidchawtany]

replace it with A5, that's the value of MBP's EDID

If you could show how you got that value "A5", we can try other apple displays.

 

[RehabMan]

replace it with A5, that's the value of MBP's EDID

So, for byte 20:
(https://en.wikipedia.org/wiki/Extended_Display_Identification_Data)

Video input parameters bitmap
Bit 7=1 Digital input. If set, the following bit definitions apply:
Bits 6–4 Bit depth: 000=undefined, 001=6, 010=8, 011=10, 100=12, 101=14, 110=16 bits per color, 111=reserved
Bits 3–0 Video interface: 0000=undefined, 0001=HDMIa, 0010=HDMIb, 0100=MDDI, 0101=DisplayPort
Bit 7=0 Analog input. If clear, the following bit definitions apply:
Bits 6–5 Video white and sync levels, relative to blank: 00=+0.7/−0.3 V; 01=+0.714/−0.286 V; 10=+1.0/−0.4 V; 11=+0.7/0 V
Bit 4 Blank-to-black setup (pedestal) expected
Bit 3 Separate sync supported
Bit 2 Composite sync (on HSync) supported
Bit 1 Sync on green supported
Bit 0 VSync pulse must be serrated when composite or sync-on-green is used.

0x95 is binary: 1001 0101
0xA5 is binary: 1010 0101

Difference is setting for "Bit depth" in bits 6-4. 0x95 is bit depth 6 (001), 0xA5 is bit depth 8 (010).