external VGA output of an iBook G3 800 MHz 12 inch running Debian GNU/Linux 4.0

Pierre Bauduin pierre at baudu.in
Sat Jun 2 01:42:18 PDT 2007


 Hello,

I have bought a mini-VGA to VGA adapter for my iBook G3 800 MHz 12 inch.

When I use the adapter to connect an external VGA display to my iBook G3:
- in Mac OS X, everything is fine, I can see my desktop both on the iBook
LCD display and on the external VGA display
- in Debian GNU/Linux, I can see my desktop on the iBook LCD display, but I
see nothing but a grey screen on the external VGA display

Here is my /etc/X11/xorg.conf:
(I have already modified it in order to support an external VGA display)

     1    # /etc/X11/xorg.conf (xorg X Window System server configuration
file)
     2    #
     3    # Dernière modification: Pierre Bauduin, le 1er juin 2007 à 20h50
     4    #
     5    # This file was generated by dexconf, the Debian X Configuration
tool, using
     6    # values from the debconf database.
     7    #
     8    # Edit this file with caution, and see the /etc/X11/xorg.conf
manual page.
     9    # (Type "man /etc/X11/xorg.conf" at the shell prompt.)
    10    #
    11    # This file is automatically updated on xserver-xorg package
upgrades *only*
    12    # if it has not been modified since the last upgrade of the
xserver-xorg
    13    # package.
    14    #
    15    # If you have edited this file but would like it to be
automatically updated
    16    # again, run the following command:
    17    #   sudo dpkg-reconfigure -phigh xserver-xorg

    18    Section "Files"
    19        FontPath    "/usr/share/fonts/X11/misc"
    20        FontPath    "/usr/X11R6/lib/X11/fonts/misc"
    21        FontPath    "/usr/share/fonts/X11/cyrillic"
    22        FontPath    "/usr/X11R6/lib/X11/fonts/cyrillic"
    23        FontPath    "/usr/share/fonts/X11/100dpi/:unscaled"
    24        FontPath    "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
    25        FontPath    "/usr/share/fonts/X11/75dpi/:unscaled"
    26        FontPath    "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
    27        FontPath    "/usr/share/fonts/X11/Type1"
    28        FontPath    "/usr/X11R6/lib/X11/fonts/Type1"
    29        FontPath    "/usr/share/fonts/X11/100dpi"
    30        FontPath    "/usr/X11R6/lib/X11/fonts/100dpi"
    31        FontPath    "/usr/share/fonts/X11/75dpi"
    32        FontPath    "/usr/X11R6/lib/X11/fonts/75dpi"
    33        # path to defoma fonts
    34        FontPath    "/var/lib/defoma/x- ttcidfont-conf.d
/dirs/TrueType"
    35    EndSection

    36    Section "Module"
    37        Load    "i2c"
    38        Load    "bitmap"
    39        Load    "ddc"
    40        Load    "dri"
    41        Load    "extmod"
    42        Load    "freetype"
    43        Load    "glx"
    44        Load    "int10"
    45        Load    "vbe"
    46    EndSection

    47    Section "InputDevice"
    48        Identifier    "Generic Keyboard"
    49        Driver        "kbd"
    50        Option        "CoreKeyboard"
    51        Option        "XkbRules"    "xorg"
    52            # Pierre Bauduin le 12 mai 2007
    53        # D'après le hack 4 de "Debian à 200%" page 15 ISBN 2841773671
    54        #Option         "XkbModel"      "pc104"
    55        Option          "XkbModel"      "macintosh"
    56        #Option        "XkbLayout"    "us"
    57        #Option         "XkbLayout"     "be"
    58        Option          "XkbLayout"     "fr"
    59    EndSection

    60    Section "InputDevice"
    61        Identifier    "Configured Mouse"
    62        Driver        "mouse"
    63        Option        "CorePointer"
    64        Option        "Device"        "/dev/input/mice"
    65        Option        "Protocol"        "ImPS/2"
    66        Option        "Emulate3Buttons"    "true"
    67    EndSection

    68    Section "InputDevice"
    69        Identifier    "Synaptics Touchpad"
    70        Driver        "synaptics"
    71        Option        "SendCoreEvents"    "true"
    72        Option        "Device"        "/dev/psaux"
    73        Option        "Protocol"        "auto-dev"
    74        Option        "HorizScrollDelta"    "0"
    75    EndSection

    76    Section "Device"
    77        Identifier    "ATI Technologies Inc Radeon Mobility M7 LW
[Radeon Mobility 7500]"
    78        Driver        "ati"
    79        BusID        "PCI:0:16:0"
    80        Option        "UseFBDev"        "true"
    81        # Ajout Pierre Bauduin le 1er juin 2007
    82        Option         "MonitorLayout"     "LVDS,VGA"
    83        Option         "CRT2HSync"         "30 - 83"
    84        Option         "CRT2VRefresh"         "56 - 75"
    85        # Fin ajout PBN
    86    EndSection

    87    Section "Monitor"
    88        Identifier    "iBook Color LCD"
    89        Option        "DPMS"
    90    EndSection

    91    # Ajout Pierre Bauduin
    92    # Le 1er mai 2007
    93    Section "Monitor"
    94        identifier "Generic Monitor"
    95        vendorname "Plug 'n' Play"
    96        modelname "Plug 'n' Play"
    97        modeline "640x480 at 60" 25.2 640 656 752 800 480 490 492 525
-vsync -hsync
    98        modeline "800x600 at 72" 50.0 800 856 976 1040 600 637 643 666
+hsync +vsync
    99        modeline "1024x768 at 70" 75.0 1024 1048 1184 1328 768 771 777
806 -vsync -hsync
   100        gamma 1.0
   101    EndSection
   102    #


   103    Section "Screen"
   104        Identifier    "iBook Screen"
   105        Device        "ATI Technologies Inc Radeon Mobility M7 LW
[Radeon Mobility 7500]"
   106        Monitor        "iBook Color LCD"
   107        DefaultDepth    24
   108        SubSection "Display"
   109            Depth        1
   110            Modes        "1024x768"
   111        EndSubSection
   112        SubSection "Display"
   113            Depth        4
   114            Modes        "1024x768"
   115        EndSubSection
   116        SubSection "Display"
   117            Depth        8
   118            Modes        "1024x768"
   119        EndSubSection
   120        SubSection "Display"
   121            Depth        15
   122            Modes        "1024x768"
   123        EndSubSection
   124        SubSection "Display"
   125            Depth        16
   126            Modes        "1024x768"
   127        EndSubSection
   128        SubSection "Display"
   129            Depth        24
   130            Modes        "1024x768"
   131        EndSubSection
   132    EndSection

   133    # Ajouté par Pierre Bauduin
   134    # Le 1er mai 2007
   135    Section "Screen"
   136        Identifier "Default Screen"
   137        Device    "ATI Technologies Inc Radeon Mobility M7 LW [Radeon
Mobility 7500]"
   138        Monitor "Generic Monitor"
   139        DefaultDepth 24
   140    SubSection "Display"
   141        depth 24
   142        virtual 1024 768
   143        # modes "640x480 at 60"
   144        # modes "800x600 at 72 "
   145        Modes "1024x768 at 70"
   146        EndSubSection
   147    EndSection
   148    #

   149    Section "ServerLayout"
   150        Identifier    "Default Layout"
   151        Screen        "Default Screen"
   152        InputDevice    "Generic Keyboard"
   153        InputDevice    "Configured Mouse"
   154        InputDevice    "Synaptics Touchpad"
   155    EndSection

   156    Section "DRI"
   157        Mode    0666
   158    EndSection

For an up-to-date version you can take a look at this page on my site:
http://pierre.baudu.in/ibook/#external_vga_output

Any help would be appreciated,
Thank you,
-- 
Pierre Bauduin
Linux enthusiast since 1996
Linux registered user #64711
Debian GNU/Linux user
website: http://pierre.baudu.in/
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