[RndTbl] Monitor detection

[John Lange]

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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