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for what it's worth - here's some notes related to getting Fedora Core
3 working on my T41 laptop - which supports dual monitors & chooses
the 2nd monitor when the docking station is plugged into a KVM.<br>
.............................................................<br>
Sheesh ... everything worked fine using the laptop LCD, it worked fine
when I had the monitor plugged directly into the laptop and/or docking
station - but when trying to use the T41 with a KVM, I always got a
physical screen size of 640x480 and a virtual screen size of 1024x768
(or whatever I choose to the monitor). So after ignoring this &
gnashing my teeth for a few weeks, here's what I learned:<br>
<br>
1. this is a well know problem
(<a class="moz-txt-link-freetext"
href="http://www.linuxforums.org/forum/post-129447.html">http://www.linuxforums.org/forum/post-129447.html</a>)<br>
2. IBM doesn't care (or so it would appear reading the messages I found
on Google)<br>
3. you can fix this on Fedora if you use the xorg.conf parameters
instead of the XFree86 parameters shown above. <br>
<br>
It finally occurred to me how to get all the useful options - I ran
"Xorg -configure" and it created a sample file that was good for
nothing EXCEPT it listed the xorg DEVICE parameters. I looked in the
var/log/Xorg.0.log and discovered that when the T41 was hooked to the
KVM, it assumed I was using a the secondary monitor, CRT2, for which it
assumed 640x480 defaults. So, I added the following to my xorg.conf
file & things once again worked for me using the KVM with my T41:<br>
<blockquote><small><b>#<br>
# funny stuff for to support T41 connected to KVM<br>
#<br>
Section "Monitor"<br>
Identifier "CRT2"<br>
HorizSync 31.5 - 67.0<br>
VertRefresh 50.0 - 75.0<br>
EndSection<br>
<br>
Section "Screen"<br>
Identifier "Screen2"<br>
Device "Videocard0"<br>
Monitor "CRT2"<br>
DefaultDepth 24<br>
SubSection "Display"<br>
Depth 24<br>
Modes "1280x1024" "1280x960" "1152x864" "1024x768"
"800x600" "640x480"<br>
EndSubSection<br>
EndSection<br>
#<br>
# end of stupd KVM T41 stuff<br>
#<br>
</b></small></blockquote>
<b><small> Section "Device"</small></b><br>
<blockquote><b><small> Identifier "Videocard0"</small></b><br>
<b><small> Driver "radeon"</small></b><br>
<b><small> VendorName "Videocard vendor"</small></b><br>
<b><small> BoardName "ATI Radeon Mobility 7500"</small></b><br>
<b><small># more stupid KVM - T41 stuff follows (Options)</small></b><br>
<b><small> Option "CRT2HSync" "31.0-82.0"</small></b><br>
<b><small> Option "CRT2VRefresh" "56.0-85.0"</small></b><br>
<b><small>EndSection</small></b><br>
</blockquote>
The CRT2Hsync & CRT2VRefresh are really, really important!
(Don't use the CloneVSync or CloneHRefresh found in the URL example!)<br>
<br>
Done.<br>
<br>
-------- Original Message --------
<table border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<th align="right" nowrap="nowrap" valign="baseline">Subject: </th>
<td>Re: [AG-TECH] Fedora Core 3 Display Troubles</td>
</tr>
<tr>
<th align="right" nowrap="nowrap" valign="baseline">Date: </th>
<td>Fri, 10 Dec 2004 14:04:13 -0600</td>
</tr>
<tr>
<th align="right" nowrap="nowrap" valign="baseline">From: </th>
<td>Fred Dech <a class="moz-txt-link-rfc2396E" href="mailto:fdech@uchicago.edu"><fdech@uchicago.edu></a></td>
</tr>
<tr>
<th align="right" nowrap="nowrap" valign="baseline">To: </th>
<td>AG_Tech_List <a class="moz-txt-link-rfc2396E" href="mailto:ag-tech@mcs.anl.gov"><ag-tech@mcs.anl.gov></a></td>
</tr>
<tr>
<th align="right" nowrap="nowrap" valign="baseline">References: </th>
<td><a class="moz-txt-link-rfc2396E" href="mailto:892CC2C451D0414B90159D10B5BDAA6549A874@EXCHANGE.astate.edu"><892CC2C451D0414B90159D10B5BDAA6549A874@EXCHANGE.astate.edu></a>
<a class="moz-txt-link-rfc2396E" href="mailto:6bb8cb5204120920526388df22@mail.gmail.com"><6bb8cb5204120920526388df22@mail.gmail.com></a></td>
</tr>
</tbody>
</table>
<br>
<br>
<pre>it's been a while, but i thought i needed to edit xorg.conf directly in
order to get the multiple monitor settings correct.
i think, check the 'ServerLayout' section of xorg.conf for fine-tuning.
it probably discusses that in Andrew's link.
--fred
On Thu, Dec 09, 2004 at 09:52PM, Andrew Replogle said:
> Todd,
>
> Try this site for a more in depth setup of X11 dual-headed:
>
> <a class="moz-txt-link-freetext" href="http://quark.humbug.org.au/publications/xfree86/xinerama.html">http://quark.humbug.org.au/publications/xfree86/xinerama.html</a>
>
> Let me know if you still run into issues.
>
> Andrew
>
>
> On Thu, 9 Dec 2004 15:52:36 -0600, Todd Reed <a class="moz-txt-link-rfc2396E" href="mailto:treed@astate.edu"><treed@astate.edu></a> wrote:
> > I've installed Fedora Core 3 on our Display System and I'm having
> > trouble getting the displays to span across the screens. I have the
> > operators monitor plugged into a Matrox G200. There are also 3
> > Projectors plugged into a Matrox G450. The G200 works fine and the G450
> > is being recoginized by Fedora. However, I'm getting a "No Signal"
> > message on the projectors. I've tried going into the Display Setting,
> > Use Dual head, Second Video Card = G450, Desktop Layout = Spanning. But
> > nithing happens. The other odd issue is that there are 4 - G200 in the
> > Second Video Card section and 1 G450.
> >
> > Any suggestions to make this work?
> >
> > --Todd
> >
> >
</pre>
<br>
<pre class="moz-signature" cols="72">--
Bob Riddle (<a class="moz-txt-link-abbreviated" href="mailto:bdr@internet2.edu">bdr@internet2.edu</a>) Technologist,Internet2
3025 Boardwalk, Suite 100 Ann Arbor, Michigan 48108
Business Phone: 734.913.4257 Fax Number: 734.913.4255
"Math illiteracy affects 7 out of every 5 people"
</pre>
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