@Christopher Hawker :<br>my laptop version is M54SR, old version of Axioo. <br><br>@Robert Heller :<br>VGA or DVI?<br>--> VGA<br><br>Which screen is blank? The notebook's or the LCD Projector or both?<br>--> LCD Projector<br>
<br>Is the LCD Projector displaying a message to the effect that an<br>
unsupported sync rate or video mode in being used?<br>
--> No. Nothing's happen. Just blank screen. I think it's becaused lcd projector mode maybe doesn't same with xorg but I don't know how to configure it.<br><br><div class="gmail_quote">On Sun, Sep 11, 2011 at 9:25 PM, Robert Heller <span dir="ltr"><<a href="mailto:heller@deepsoft.com">heller@deepsoft.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">At Sun, 11 Sep 2011 20:34:30 +0700 CentOS mailing list <<a href="mailto:centos@centos.org">centos@centos.org</a>> wrote:<br>
<br>
><br>
><br>
><br>
> dear guys,<br>
><br>
> I have a problem between my CentOS 5.5 (on Axioo notebook) and LCD<br>
> Projector. When I connect my notebook to LCD Projector, it can detect my<br>
> notebook.<br>
<br>
</div>VGA or DVI?<br>
<div class="im"><br>
> But when I press Fn + F7 to activate dual monitor between my notebook and<br>
> LCD Projector it goes to blank screen. FYI, the LCD Projector is NEC but I<br>
> don't know the series.<br>
<br>
</div>Which screen is blank? The notebook's or the LCD Projector or both?<br>
<div class="im"><br>
> I've tried to change display using dual head monitor but it has no effects.<br>
<br>
</div>There are two different things going on here.<br>
<br>
"dual head monitor" normally means that the two monitors display<br>
*different* stuff. This *usually* implies that the *video card*<br>
specificly supports two independent monitors, usually by having two<br>
frame buffers and two video outputs. This usually also implies *two*<br>
Device sections in xorg.conf, eg you (logically) have two video cards<br>
installed (even if they are both on the same physical 'card' or even same<br>
physical 'chip').<br>
<br>
*Most* laptops/notebooks DON'T have "dual head monitor" capable video<br>
cards. What they have is a video output that goes to a logical "Y"<br>
connection: *one* frame buffer+video output circuit, going to two video<br>
connections, one being the internal LCD and the other being the VGA (or<br>
DVI with newer laptops/notebooks) connector.<br>
<br>
The Fn + F7 generally toggles between two or three states:<br>
<br>
Video goes to the internal screen.<br>
Video goes to the external screen.<br>
Video goes to both screens (*some* laptops/notebooks can't do this, esp.<br>
if the scan rates are incompatible).<br>
<br>
In all cases there is only one video 'Device'. The Fn + F7's logic is<br>
like pluging in different monitors into the *one* video output<br>
connection on a desktop.<br>
<div class="im"><br>
<br>
> Do I need some driver??<br>
<br>
</div>Probably not. It might be that you need to have different things in<br>
your Screen section, partitularly in the Display SubSection. It might<br>
be that the LCD Projector cannot handle the display mode(s) specificed.<br>
Is the LCD Projector displaying a message to the effect that an<br>
unsupported sync rate or video mode in being used?<br>
<div class="im"><br>
><br>
> and this is my xorg configuration :<br>
> Section "Device"<br>
> Identifier "Videocard0"<br>
> Driver "openchrome"<br>
> EndSection<br>
><br>
> Section "Screen"<br>
> Identifier "Screen0"<br>
> Device "Videocard0"<br>
> DefaultDepth 24<br>
> SubSection "Display"<br>
> Viewport 0 0<br>
> Depth 24<br>
> Modes "1280x800" "1024x768" "800x600" "640x480"<br>
> EndSubSection<br>
> EndSection<br>
><br>
> Hope you guys can help me. Thanks.<br>
><br>
><br>
> Andrew.<br>
><br>
</div>> MIME-Version: 1.0<br>
<div class="im">><br>
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<br>
</div><font color="#888888">--<br>
Robert Heller -- <a href="tel:978-544-6933" value="+19785446933">978-544-6933</a> / <a href="mailto:heller@deepsoft.com">heller@deepsoft.com</a><br>
Deepwoods Software -- <a href="http://www.deepsoft.com/" target="_blank">http://www.deepsoft.com/</a><br>
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