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<TITLE>The Answer Guy 31: X Window with two monitors...</TITLE>
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<H4>"Linux Gazette...<I>making Linux just a little more fun!</I>"
</H4>
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<H4 align="center">By James T. Dennis,
<a href="mailto:linux-questions-only@ssc.com">linux-questions-only@ssc.com</a><BR>
Starshine Technical Services,
<A HREF="http://www.starshine.org/">http://www.starshine.org/</A> </H4>
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<H3><img src="../gx/dennis/qbub.gif" alt="(?)" width="50" height="28"
align="left" border="0">X Window with two monitors...</H3>
<p><strong>From Mark Thomas Mercado on Tue, 30 Jun 1998 in the
<a href="news:comp.unix.questions">comp.unix.questions</a>
newsgroup
<br><br>
I've looked around on the web, and couldn't find any documentation
on setting up X with two monitors (myhost:0 and myhost:1)... I would
love to RTFM if anyone could point me in the right direction...
<br><br>
Thanks,
<br>Mark.
</strong></p>
<blockquote><img src="../gx/dennis/bbub.gif" alt="(!)" width="50" height="28"
align="left" border="0">
This would usually be called "multi-headed" mode and
the different screens would be addressed as "<tt>myhost:0.0</tt>"
and "<tt>myhost:0.1</tt>" -- "<tt>myhost:1.0</tt>" and
"<tt>myhost:1.1</tt>" (etc) would refer to a different server or
instance running on the same machine.
<br><br>
I don't know what this means on other forms of Unix
--- but I think you'd usually see it on a system that
was hosting multiple X Terminals via XDMCP. On my Linux
boxes I usually see it as an extra instance of the X server
running on a different virtual console (so my wife and
I can each have a running copy on any of the systems
around the house without having to disturb the other's).
<br><br>
In our case we run <tt>startx -- :1</tt> to start the 2nd instance
of our X server. We can then switch between them with
the [Ctrl]+[Alt]+[Fx] sequence (or the [Alt]+[Fx] sequence
to get to either of them from any of our text mode virtual
consoles. (If you don't use a PC Unix that supports
VC's this probably won't make any sense -- don't worry
about it).
<br><br>
Getting back to multi-headed support:
<br><br>
This depends on your X server. Last I heard XFree86 servers
(the suite of X servers that's most commonly used with Linux
<a href="http://www.freebsd.org/">FreeBSD</a>,
<a href="http://www.netbsd.org/">NetBSD</a> (PC) etc) don't
currently support multi-headed operation.
<br><br>
I know that some of the commercial X servers for Linux
(and presumably FreeBSD, etc) support it. Unfortunately
I've never used a PC or Mac Unix that was configured
this way. So, I don't know how it works. I've used an
old Sun system set up this was --- but I didn't configure
it or even look at it very closely --- it was just used
for some compatability at a place where I was working,
so I barely touched it.
<br><br>
I've used Macs that were multi-headed. That was a piece
of cake to configure. I also noticed that Win '98 has
this feature available --- so it might become much more
common in the next year or so.
<br><br>
Anyway, check out the XFree86 FAQ at
<A HREF="http://www.xfree86.org/">http://www.xfree86.org/</A>
for more pointers.
</blockquote>
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<H5 align="center"><a href="http://www.linuxgazette.com/copying.html"
>Copyright &copy;</a> 1998, James T. Dennis <BR>
Published in <I>Linux Gazette</I> Issue 31 August 1998</H5>
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