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[Fix] Resolve boot screen garble

When I boot, Apple Logo and Progress bar loop itself.

Off-topic.

Desktop questions should be posted to the appropriate desktop forum.

This thread is not something to address until after you have installed.

Note: Your config.plist does not have the patch as described in post #1.
 
At first I've tried a second patch to my 10.11.3 but it does not affect at all then I've tried to apply a first one instead. Now I got bootloop on a garble screen with circle.
I've tried to boot in safe mode but I can not mount efi there cause msdos fs is not available.
How can I edit my clover plist now? :(

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fixed
 
Quite a lot of people here have a display garble/scramble when Yosemite boots up.
This happens when the progress bar shows and disappears when the desktop displays.

This can be resolved with a Clover EFI patch:

Note that this should only be applied on OS X 10.10, so if you multi-boot with Mavericks add it to your custom entry instead of to the main kext patches.

Code:
<key>KextsToPatch</key>
<array>
    <dict>
        <key>Comment</key>
        <string>Second Stage Patch 1</string>
        <key>Find</key>
        <data>hcB0XUg=</data>
        <key>Name</key>
        <string>IOGraphicsFamily</string>
        <key>Replace</key>
        <data>McB0W0g=</data>
    </dict>
    <dict>
        <key>Comment</key>
        <string>Second Stage Patch 2</string>
        <key>Find</key>
        <data>QYjE6wM=</data>
        <key>Name</key>
        <string>IOGraphicsFamily</string>
        <key>Replace</key>
        <data>QYjE6yM=</data>
    </dict>
</array>


sorry but how to use this ??
 
Quite a lot of people here have a display garble/scramble when Yosemite boots up.
This happens when the progress bar shows and disappears when the desktop displays.

This can be resolved with a Clover EFI patch:

Note that this should only be applied on OS X 10.10, so if you multi-boot with Mavericks add it to your custom entry instead of to the main kext patches.

Code:
<key>KextsToPatch</key>
<array>
    <dict>
        <key>Comment</key>
        <string>Second Stage Patch 1</string>
        <key>Find</key>
        <data>hcB0XUg=</data>
        <key>Name</key>
        <string>IOGraphicsFamily</string>
        <key>Replace</key>
        <data>McB0W0g=</data>
    </dict>
    <dict>
        <key>Comment</key>
        <string>Second Stage Patch 2</string>
        <key>Find</key>
        <data>QYjE6wM=</data>
        <key>Name</key>
        <string>IOGraphicsFamily</string>
        <key>Replace</key>
        <data>QYjE6yM=</data>
    </dict>
</array>
For OS X 10.10.2/10.10.3/10.10.4, apply the following patch:
Code:
<dict>
    <key>Comment</key>
    <string>Bootloader Graphics - Second Stage Patch</string>
    <key>Find</key>
    <data>QYjE6xE=</data>
    <key>Name</key>
    <string>IOGraphicsFamily</string>
    <key>Replace</key>
    <data>QYjE6zE=</data>
</dict>

I found these patches over in the Clover EFI bootloader thread in an attachment, so credit goes to the original author.

For those not using Clover, the patches can be applied to the binary kexts directly like so:

Code:
# Run the following commands in order to patch IOGraphicsFamily to resolve bootup graphics glitches
sudo perl -i.bak -pe 's|\x85\xc0\x74\x5d\x48|\x31\xc0\x74\x5b\x48|sg' /System/Library/Extensions/IOGraphicsFamily.kext/IOGraphicsFamily
sudo [COLOR=#000000]perl -i -pe[/COLOR] 's|\x41\x88\xc4\xeb\x03|\x41\x88\xc4\xeb\x23|sg' /System/Library/Extensions/IOGraphicsFamily.kext/IOGraphicsFamily
[COLOR=#000000]sudo touch /System/Library/Extensions[/COLOR]

For OS X 10.10.2/10.10.3/10.10.4:
Code:
# Run the following commands in order to patch IOGraphicsFamily to resolve bootup graphics glitches
sudo perl -i.bak -pe 's|\x41\x88\xC4\xEB\x11|\x41\x88\xC4\xEB\x31|sg' /System/Library/Extensions/IOGraphicsFamily.kext/IOGraphicsFamily
[COLOR=#000000]sudo touch /System/Library/Extensions[/COLOR]

Wait So how do you install this exactly? sorry I'm a noob to this stuff... :)
 
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