There is a problem with 10.6.3 and Dell monitors. Some possible fixes atjlaudon wrote:Installed 10.6.3, and my 2nd monitor doesn't work - detect displays only detects the small one. The 24" dell doesn't seem to turn on after the initial grey apple logo. Then I discovered a huge discussion at Apple about external display (coudl be a video RAM problem) problems on 10.6.3.
http://reviews.cnet.com/8301-13727_7-10 ... =mncol;txt" onclick="window.open(this.href);return false;