Information for S3 ViRGE, ViRGE/DX, ViRGE/GX, ViRGE/GX2, ViRGE/MX and ViRGE/VX Users : XF86_SVGA server : Hints for LCD configuration (S3 ViRGE/MX)
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## 3.4. Hints for LCD configuration (S3 ViRGE/MX)

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.

The pixel clock for this physical size (e.g. 1024x768) mode...

- ...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)
- ...is taken from the _first_ mode in the modes line iff this mode's display size is the same as the physical LCD size
- ...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 ...'

If LCD is _not_ active, the normal mode lines and pixel clocks are used for the VGA output.

Whenever you switch output sources with Fn-F5 or similar, 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

Fn-F5 Ctrl-Alt-Plus Ctrl-Alt-Minus

and everything should be ok..

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.

Information for S3 ViRGE, ViRGE/DX, ViRGE/GX, ViRGE/GX2, ViRGE/MX and ViRGE/VX Users : XF86_SVGA server : Hints for LCD configuration (S3 ViRGE/MX)
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