Fix Blurry weird text and picture quality when connecting Mac to external Monitor via external Displayport, HDMI- forcing RGB mode instead of YCbCr. Override Edid. Dell U2713H / Dell U2713HM

There is an uncommon problem while connecting external displays to a newer Mac. Your Mac is using RGB Mode instead of YCbCr. We have the solution for every Monitor and a fast download if you have a Dell U2713H or Dell U2713HM for you.
If you want to connect your Monitor using Thunderbolt and save 85% while doing it, read this post: Connect a Monitor to a Mac or Macbook via Thunderbolt and save 85%.

Blurry weird text and picture quality when connecting Mac

Solution for Dell U2713H / Dell U2713HM

If you like to read the background if this (Go to the embdev Forums) or just download the files from us. (Download the file from us)

Go to you Finder -> Go -> Go to Folder

/System/Library/Displays/Overrides

Unzip the files here.

Go to System Preferences -> Displays -> Colors -> Dell U2713H EDID Override.

Now restart your mac.


Solution for all other Displays
We found a Ruby Script which is called the universal fix.
If you like to read, read this (Go to the embdev Forums or Github) or download the ruby script from us. (Download the patch from us) and put it in your user directory.
Go to Terminal:

chmod u+x patch-edid.rb

./patch-edid.rb

Go to you Finder -> Go -> Go to Folder

/Users/YOUR-NAME

There is a new Folder called DisplayVendor... copy it
Go to you Finder -> Go -> Go to Folder

/System/Library/Displays/Overrides

Paste the Folder.

Go to System Preferences -> Displays -> Colors -> ...... EDID Override.

Now restart your mac.

Reverse
To reverse the process simply delete the folder again.
Go to you Finder -> Go -> Go to Folder

/System/Library/Displays/Overrides

delete DisplayVendor....

Go to System Preferences -> Displays -> Colors -> Dell U2713H EDID Override.

Now restart your mac.