Horizontal timing range S3VIRGE

[Martin]

IHAC,

If my video card + monitor can do: "S3VIRGE(0): 

Modeline "1400x1050"x74.8  155.80  1400 1464 1784 1912  1050 1052 1064 1090 +hsync +vsync (81.5 kHz)", shouldn't it also be able to do:
"Modeline "1920x1080_67.50"  148.50  1920 2008 2052 2200  1080 1084 1089 1125 +hsync +vsync"

I get: "S3VIRGE(0): Not using mode "1920x1080_67.50" (horizontal timing out of range)"

The horizontal timing range is: "Monitor0: Using hsync range of 30.00-81.00 kHz"  and  "Clock range:  10.00 to 270.00 MHz"

I calculated that v-refresh = 67.5 Hz, H-scan lines=60.0kHz and Dot clock = 148.5 MHz  (for the 1920x1080 resolution) 

All parameters are well within the reported ranges
Can you explain why it reports "(horizontal timing out of range)"?, the pixel clock is below its maximum and when I calculate the hsync range it fall within its range of 30.00-81.00 kHz?

(I'm running at 16 bits color depth).

Why is the Horizontal timing out of range and how can I verify it?
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