How to calculate the proper modeline? (DCF?
I am reading "XFree86 Video Timings HOWTO" and I would like to
compute DCF/HSF but I do not know what DCF (dot clock frequency)
is ? I mean I do not know where it comes from?
Here are some information of my OS nd hardware:
I use debian2.0. I have Matrox Millenium || AGP, 8Mgb videoRAM,
monitor Bridge OSD "17 (17inch).
1.
The data from "Monitor User's Manual"
Resolution 1280x1024 Non-Interlaced (Max.)
Synchronization :Horizontal: 30KHz-70KHz (Automatically)
:Vertical: 50Hz-160Hz (Automatically)
Video Bandwidth : 100MHz at-3db
So I think I can put HSF = 70000 and VSF = 160 but what about
DCF ? Is DCF = 100 proper? How can I get it ?
So shown below the Maximum allowed dot-clock: 250.000 MHz
Is it connected to DCF ?
2. X -probeonly gives the following messages:
Free86 Version 3.3.2.3 / X Window System
(protocol Version 11, revision 0, vendor release 6300)
Release Date: July 15 1998
XF86Config: /etc/X11/XF86Config
(**) stands for supplied, (--) stands for probed/default values
(**) XKB: rules: "xfree86"
(**) XKB: model: "pc101"
(**) XKB: layout: "us"
(**) Mouse: type: PS/2, device: /dev/mouse, resolution: 100
(**) Mouse: buttons: 3, 3 button emulation (timeout: 50ms)
(**) SVGA: Graphics device ID: "Primary Card"
(**) SVGA: Monitor ID: "Primary Monitor"
Warning: The directory "/usr/X11R6/lib/X11/fonts/Type1" does not exist.
Entry deleted from font path.
Warning: The directory "/usr/X11R6/lib/X11/fonts/Speedo" does not exist.
Entry deleted from font path.
(**) FontPath set to
"/usr/X11R6/lib/X11/fonts/misc:unscaled,
/usr/X11R6/lib/X11/fonts/75dpi:unscaled,
/usr/X11R6/lib/X11/fonts/100dpi:unscaled,
/usr/X11R6/lib/X11/fonts/misc,/usr/X11R6/lib/X11/fonts/75dpi,
/usr/X11R6/lib/X11/fonts/100dpi"
(--) SVGA: PCI: Matrox MGA 2164W AGP rev 0, Memory @ 0xe8000000,
0xe4000000
(--) SVGA: Linear framebuffer at 0xE8000000
(--) SVGA: MMIO registers at 0xE4000000
(--) SVGA: Video BIOS info block at 0x000c7dc0
(--) SVGA: Found and verified enhanced Video BIOS info block
(--) SVGA: chipset: mga2164w AGP
(--) SVGA: videoram: 8192k
(**) SVGA: Option "dac_8_bit"
(**) SVGA: Using 16 bpp, Depth 16, Color weight: 565
(--) SVGA: Maximum allowed dot-clock: 250.000 MHz
(**) SVGA: Mode "1024x768": mode clock = 85.000
(**) SVGA: Mode "800x600": mode clock = 60.750
(**) SVGA: Mode "640x480": mode clock = 36.000
(**) SVGA: Virtual resolution set to 1152x950
(--) SVGA: SpeedUp code selection modified because virtualX != 1024
(--) SVGA: MCLK set to 62.000 MHz
(--) SVGA: Using hardware cursor
(--) SVGA: Using XAA (XFree86 Acceleration Architecture)
(--) SVGA: XAA: Solid filled rectangles
(--) SVGA: XAA: Screen-to-screen copy
(--) SVGA: XAA: 8x8 color expand pattern fill
(--) SVGA: XAA: CPU to screen color expansion (TE/NonTE imagetext,
TE/NonTE polytext)
(--) SVGA: XAA: Using 9 128x128 areas for pixmap caching
(--) SVGA: XAA: Caching tiles and stipples
(--) SVGA: XAA: General lines and segments
(--) SVGA: XAA: Dashed lines and segments
Thanks in advance
Please send the answer to krupa@alpha.sggw.waw.pl
because the mailing list is too busy for me so I could miss
the answer.
Jan Krupa
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