Blurry text on some monitors
Q I’ve just switched from an iMac to a Mac mini as a cheaper upgrade. A big part of the savings was the ability to use a cheaper monitor – a 27-inch Samsung LCD. However, the text is blurry and no changes in System Preferences seem to help. I have tried the monitor on a PC and it looks fine. Graham Lewis A There are lots of reasons why you might get a blurry image. The two most common are that the monitor is over- or under-scanning (there’ll be an option for this in the monitor’s own menu) and font smoothing (try typing defaults -currentHost write -global-Domain Apple-Font-Smoothing -int 2 in Terminal, then log out and back in). There’s another possibility. Apple’s DisplayPort uses the YCbCr colour encoding scheme by default, and this can look weird on some monitors. You can fix it by running a script to convince OS X the monitor only supports RGB. Download the script at embdev.net/attachment/168316/ patch-edid.rb and type ruby patch-edid.rb in Terminal. This creates a folder in your home folder. Move this into /System/ Library/Displays/Overrides and restart.