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<A HREF="S3.html"><EM> Information for S3 Chipset Users</EM></A>
 <b>:</b> <EM>Hints for LCD configuration (S3 Aurora64V+)</EM><BR>
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  <H2><A NAME="7"></A>7. Hints for LCD configuration (S3 Aurora64V+)</H2>
<p>If LCD is active the CRT will always output 1024x768 (or whatever is 
the _physical_ LCD size) and smaller modes are zoomed to fit on the LCD
unless you specify Option "lcd_center" in the device section.</p>
<p>The pixel clock for this physical size (e.g. 1024x768) mode...
<ul>
<li>...can explicitly set in the config file (device section) with  e.g. `Set_LCDClk 70'
(resulting 70 MHz pixel clock being used for all modes when LCD is on)</li>
<li>...is taken from the _first_ mode in the modes line iff this mode's display size
is the same as the physical LCD size</li>
<li>...the default LCD pixel clock of BIOS initialisation setup is used.  
This value is output at server startup in the line `LCD size ...' 
unless you're specifying a value using `Set_LCDClk ...'</li>
</ul>
</p>
<p>If LCD is _not_ active, the normal mode lines and pixel clocks 
are used for the VGA output.</p>
<p>Whenever you switch output sources with Fn-F5, 
the Xserver won't get informed and pixel clock and other settings are wrong.
Because of this you have to switch modes _after_ switch output sources!
Then the server will check which outputs are active and select the correct
clocks etc.  
So the recommended key sequence to switch output is</p>
<p>Fn-F5  Ctrl-Alt-Plus  Ctrl-Alt-Minus</p>
<p>and everything should be ok..  </p>
<p>on the Toshiba keypad you can first hold down Ctrl-Alt, then press `Fn' additionally 
before pressing Plus/Minus too to avoid to explicitly enable/disable 
the numeric keypad for mode switching.</p>


 <HR NOSHADE>
<A HREF="S3.html"><EM> Information for S3 Chipset Users</EM></A>
 <b>:</b> <EM>Hints for LCD configuration (S3 Aurora64V+)</EM><BR>
<b>Previous:</b> <A HREF="S36.html"><EM>Reference clock value for IBM RGB 5xx  RAMDACs</EM></A><BR>
<b>Next:</b> <A HREF="S38.html"><EM>How to avoid ``snowing'' display while performing graphics operations</EM></A>



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