Hi folks, If this is off-topic, kindly let me know. This is a question about OS X, but it appears the answer lies in the Darwin portions of the OS :-) As of OS X 10.1.3, there is a well-known bug where PBG4 (just 667?) users cannot use an external monitor with the lid closed. This worked in 10.1.2 and below, and is listed as a feature in the PBG4 manual (pgs. 53 & 97). I've been told it's due to a defective heat issue. As a UNIX administrator, I'd love to keep current on OS versions, whilst still being able to use just the external monitor with the lid closed (1154x768 is too small, and using dual displays is too slow under current versions). I work in a climate-controlled server room (eg. COLD) and plan to keep an eye on temperature. So until Apple recalls TiBooks, or implements the functionality again, I'd like to do some playing around with the internals and see if I can come up with a short-term patch. I have a test TiBook to play around with and render unbootable :-). My questions: 1.) I looked back in the DARWIN-KERNEL archives, and saw some posts by David Hazelback and others, and his issue was very similar. Whatever came of that? 2.) I'm mostly in a familiarization phase right now. Which areas would I want to focus in? From what I can see, what I am looking for is probably in a KEXT somewhere (perhaps AppleHeathrow?) Thanks in advance, for any constructive help! Jacob _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.