[Fix] Resolve boot screen garble

[why.gwn]

Dev, i solving that just reinstall iographicsfamilly.kext from 10.11.4 to my current version el capitan 10.11.5 beta 4 with kext installer.

Actually i do the same with applehda.kext.
I just replace with old working version every update. Because my codec is connexant. That just minor support for that.

My question, what happen if i do that dev?
Is that okay?
All that i know is that way make kext will never updated. But dont know what the effect.

Thanks dev.

 

[RehabMan]

Dev, i solving that just reinstall iographicsfamilly.kext from 10.11.4 to my current version el capitan 10.11.5 beta 4 with kext installer.

Actually i do the same with applehda.kext.
I just replace with old working version every update. Because my codec is connexant. That just minor support for that.

My question, what happen if i do that dev?
Is that okay?
All that i know is that way make kext will never updated. But dont know what the effect.

Thanks dev.

Nothing to be done until 10.11.5 is released.

 

[telepati]

This happens when the progress bar shows and disappears when the desktop displays.

This patch, courtesy of lisai9093 and ceckpawon (insanelymac), will lessen the severity.

The patch should be entered into config.plist/KernelAndKextPatches/KextsToPatch.

Comment: Boot graphics glitch, 10.10.x/10.11.x (credit lisai9093, cecekpawon)
Name: IOGraphicsFamily
Find: <01000075 17>
Replace: <010000eb 17>

As it looks in XML inside the plist file:

<key>KextsToPatch</key>
<array>
<dict>
    <key>Comment</key>
    <string>Boot graphics glitch, (credit lisai9093, cecekpawon)</string>
    <key>Disabled</key>
    <true/>
    <key>Find</key>
    <data>AQAAdRc=</data>
    <key>Name</key>
    <string>IOGraphicsFamily</string>
    <key>Replace</key>
    <data>AQAA6xc=</data>
</dict>
</array>

This path can't help me for HD 530 on ASUS Z170-A. I am still getting this error every startup. I attached my config and ioreg files. Could you please check and tell me what am I doing wrong. Thank you.

 

[RehabMan]

This path can't help me for HD 530 on ASUS Z170-A. I am still getting this error every startup. I attached my config and ioreg files. Could you please check and tell me what am I doing wrong. Thank you.
View attachment 196820

You have the patch disabled in your config.plist. Disabled patches should not be expected to have an effect.

 

[telepati]

You have the patch disabled in your config.plist. Disabled patches should not be expected to have an effect.

As always your are perfect I changed like that and everything works now; But now little annoying thing left. After apple logo desktop comes and millisecond screen turns black and then goes normal. How can I fix that?

<dict>
                    <key>Comment</key>
                    <string>Boot graphics glitch, (credit lisai9093, cecekpawon)</string>
                    <key>Disabled</key>
                    <false/>
                    <key>Find</key>
                    <data>AQAAdRc=</data>
                    <key>Name</key>
                    <string>IOGraphicsFamily</string>
                    <key>Replace</key>
                    <data>AQAA6xc=</data>
            </dict>

 

[RehabMan]

But now little annoying thing left. After apple logo desktop comes and millisecond screen turns black and then goes normal. How can I fix that?

Normal. No fix.

I believe this patch trades glitch screen for black screen... (at least in some cases).

 

[telepati]

Normal. No fix.

I believe this patch trades glitch screen for black screen... (at least in some cases).

Thanks. You saved me again.

 

[telepati]

Normal. No fix.

I believe this patch trades glitch screen for black screen... (at least in some cases).

Removed post.

 

[RehabMan]

I really obsess this thing. I made little video. Could you please check it. This thing is really super annoying.

Here it is how it looks;

This guide covers only the boot time glitch, not other problems... no matter how annoying.

 

[konsti]

As it looks in XML inside the plist file:

<key>KextsToPatch</key>
<array>
<dict>
    <key>Comment</key>
    <string>Boot graphics glitch, (credit lisai9093, cecekpawon)</string>
    <key>Disabled</key>
    <true/>
    <key>Find</key>
    <data>AQAAdRc=</data>
    <key>Name</key>
    <string>IOGraphicsFamily</string>
    <key>Replace</key>
    <data>AQAA6xc=</data>
</dict>
</array>

Hi @RehabMan, I would like to express my sincere thanks for providing this quick-fix for the black booting screen glitch where white apple logo is "shredded" half-way through that boot-screen.

Despite not having same mobo, I'd like to confirm that even on my MSI Z97i-AC board with Core i7-4790K (iMac15,1) using only embedded IGPU (HD 4600 Graphics) it works as "advertised" via Clover, of course. Many thanks!

For learning purposes, could you possibly explain briefly why this "glitch" is happening? Is the boot screen switching from some display mode to another? Or the graphics driver kicks-in? Just to undertsand what this patch does, really

I've been reading in all these pages where you keep tirelessly repating to some people about "CSM" (i.e. Compatibility Support Module, per your guide) but I wanted to ask, if you know about a similar "name" for desktop BIOSes, as obviously this isn't the same across all motherboards. I cannot find a similar reference on my MSI EFI BIOS, for example. Is this "CSM" setting under the boot options (e.g. UEFI+Legacy) or under "Windows 8" options? I have only some "MSI Fast Boot" and "Fast Boot"... There is also a "Secure Boot" if enabling "Windows 8" boot... But anyway