[Xpert]A Sun GDM-17E20 with a Matrox G400

[Martin Hicks]

Hello,

I've acquired a Sun GDM-17E20 monitor from a friend.  I have been told that
it is possible to get this monitor working on a normal video card (in this
case I have a Matrox G400).  The two resolutions that the monitor supports
are 1280X1024@76hz and 1152X900@76hz.

I would like to get it working at 1280x1024@76Hz.  I read that the 
second head of the G400 only will do 1280x1024 @ 75Hz, so I tried
setting the monitor up on the primary head.  I still was unable
to make X do the 1280x1024@76Hz resolution, even with a modeline
that was stuck in by mgapdesk.

The modeline that it stuck in was:

ModeLine     "1280x1024@76Hz:1" 136.8 1280 1296 1440 1688 1024 1025 1028 1066 +hsync 
+vsync

But when X starts this modeline is rejected:

(II) MGA(1): Not using mode "1280x1024@76Hz:1" (bad mode clock/interlace/doublescan)

Attached is my XF86Config-4 file.

TIA
mh
 

-- 
Martin Hicks   || [EMAIL PROTECTED]    
Use PGP/GnuPG  || DSS PGP Key: 0x4C7F2BEE  
Beer: So much more than just a breakfast drink.

Section "ServerLayout"
        Identifier     "Matrox PowerDesk configured."
        Screen         "Display 1" RightOf "Display 2"
        Screen         "Display 2" 0 0
        InputDevice    "Mouse1" "CorePointer"
        InputDevice    "Keyboard1" "CoreKeyboard"
EndSection

Section "Files"
        RgbPath      "/usr/X11R6/lib/X11/rgb"
        FontPath     "unix/:7100"
EndSection

Section "Module"
        Load  "dbe"
        Load  "glx"
        Load  "v4l"
        Load  "xv"
        Load  "extmod"
        Load  "type1"
        Load  "freetype"
EndSection

Section "ServerFlags"
        Option "Xinerama"
EndSection

Section "InputDevice"
        Identifier  "Keyboard1"
        Driver      "Keyboard"
        Option      "XkbOptions" "ctrl:swapcaps"
EndSection

Section "InputDevice"
        Identifier  "Mouse1"
        Driver      "mouse"
        Option      "Protocol" "ImPS/2"
        Option      "Device" "/dev/input/mice"
        Option      "ZAxisMapping" "4 5"
EndSection

Section "Monitor"
        Identifier   "Display 2"
        HorizSync    24.8 - 82.0
        VertRefresh  50.0 - 120.0
EndSection

Section "Monitor"
        Identifier   "Display 1"
        HorizSync    29.0 - 85.0
        VertRefresh  50.0 - 150.0
        ModeLine     "1280x1024@76Hz:1" 136.8 1280 1296 1440 1688 1024 1025 1028 1066 
+hsync +vsync
EndSection

Section "Device"
        Identifier  "MATROX CARD 1"
        Driver      "mga"
        VendorName  "Unknown"
        BoardName   "Unknown"
        BusID       "PCI:1:0:0"
EndSection

Section "Device"
        Identifier  "MATROX CARD 2"
        Driver      "mga"
        VideoRam    32768
        BusID       "PCI:1:0:0"
        Screen      1
EndSection

Section "Screen"
        Identifier "Display 1"
        Device     "MATROX CARD 1"
        Monitor    "Display 1"
        DefaultDepth     24
        DefaultFbBPP     32
        SubSection "Display"
                Depth     8
                Modes    "1280x1024" "1024x768" "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Depth     16
                Modes    "1280x1024" "1024x768" "800x600" "640x480"
        EndSubSection
        SubSection "Display"
                Depth     24
                Modes    "1280x1024" "1024x768" "800x600" "640x480"
        EndSubSection
EndSection

Section "Screen"
        Identifier "Display 2"
        Device     "MATROX CARD 2"
        Monitor    "Display 2"
        DefaultDepth     24
        DefaultFbBPP     32
        SubSection "Display"
                Depth     24
                Modes    "1280x1024"
        EndSubSection
EndSection

Section "DRI"
        Mode         0666
EndSection

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