To answer my own question from a while back: The command is dccprobe. So something like: dccprobe |grep "analog signal" Will tell you if you have a second monitor attached. For debian/ubuntu (and I assume Fedora) fans, there is some good information here: http://ubuntufan.wordpress.com/2006/10/06/detecting-dual-displays/ I put the (modified) script from that page in: /etc/init.d/boot.local And it works like a charm! But SUSE does not include dccprobe so you will have to find dccprobe source and compile it yourself. I actually just used the source from the debian package (because I couldn't find it any place else): http://packages.debian.org/unstable/source/xresprobe Just untar, cd dccprobe, make. Then copy ddcprobe to someplace useful like /usr/local/sbin/ Now when I boot my laptop it automatically goes into either Xinerama mode, or clone dual-head mode depending on if I have another monitor attached or not. I also have two small scripts that I can use to force it one way or the other if I plug in a monitor after booting. John On Wed, 2007-07-11 at 12:21 -0500, John Lange wrote:
I know someone mentioned this at a distant past MUUG meeting; what is the command line tool that will query the attached monitor for its settings? I believe this is called DDC?
I have a laptop and I'd like to have a command line tool that can detect if a second monitor is attached.
Any tips?
John
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