I have a blue G3 iMac running OpenBSD 4.4; this is the 350MHz, slot-
loading model. Although the X server worked well with 8-bit colour
after installation, getting better colour and acceleration seemed
less easy, so it seems worth posting my configuration here.
The important parts seem to be:
Option "UseFBDev" "False"
Without this the X server fails to start. My guess is that there is
a build error as the default seems to be set to load a module to work
with a Linux kernel.
HorizSync 59-62
The built-in monitor only locks to a narrow range of horizontal scan
rates around 60kHz. Outside that range it blanks the video, so it is
hard to know what is wrong.
ModeLine "800x600" 62.4 800 818 906 1040 600 601 604 638
Because of the restricted lock range, few of the built-in modes will
work (640x480 does), so custom modes are needed.
The dot clock must be set to give the right scan rate: dot_clock =
scan_rate * dots_per_line / 1000.
Here 62.4 = 60 * 1040 / 1000.
Giles
# **********************************************************************
# Module section -- this section is used to specify
# which dynamically loadable modules to load.
# **********************************************************************
#
Section "Module"
# This loads the DBE extension module.
Load "dbe" # Double buffer extension
# This loads the miscellaneous extensions module, and disables
# initialisation of the XFree86-DGA extension within that module.
SubSection "extmod"
Option "omit xfree86-dga" # don't initialise the DGA
extension
EndSubSection
# This loads the font modules
# Load "type1"
Load "freetype"
# Load "xtt"
# This loads the GLX module
# Load "glx"
# This loads the DRI module
# Load "dri"
EndSection
# **********************************************************************
# Files section. This allows default font and rgb paths to be set
# **********************************************************************
Section "Files"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/TTF/"
FontPath "/usr/X11R6/lib/X11/fonts/OTF"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
# FontPath "/usr/X11R6/lib/X11/fonts/local/"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo/"
# FontPath "/usr/X11R6/lib/X11/fonts/TrueType/"
# FontPath "/usr/X11R6/lib/X11/fonts/freefont/"
EndSection
# **********************************************************************
# Server flags section.
# **********************************************************************
Section "ServerFlags"
EndSection
# **********************************************************************
# Input devices
# **********************************************************************
# **********************************************************************
# Core keyboard's InputDevice section
# **********************************************************************
Section "InputDevice"
Identifier "Keyboard1"
Driver "kbd"
Option "AutoRepeat" "500 30"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection
# **********************************************************************
# Core Pointer's InputDevice section
# **********************************************************************
Section "InputDevice"
# Identifier and driver
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "wsmouse" # wsmouse protocol
Option "Device" "/dev/wsmouse"
EndSection
# **********************************************************************
# Monitor section
# **********************************************************************
# Any number of monitor sections may be present
Section "Monitor"
Identifier "Built-in"
HorizSync 59-62
ModeLine "800x600" 62.4 800 818 906 1040 600 601 604 638
VertRefresh 60-110
EndSection
# **********************************************************************
# Graphics device section
# **********************************************************************
Section "Device"
Identifier "ATI Rage 128 VR/RL"
Driver "r128"
Option "UseFBDev" "False"
EndSection
# **********************************************************************
# Screen sections
# **********************************************************************
# Any number of screen sections may be present. Each describes
# the configuration of a single screen. A single specific screen
section
# may be specified from the X server command line with the "-screen"
# option.
Section "Screen"
Identifier "Screen 1"
Device "ATI Rage 128 VR/RL"
Monitor "Built-in"
DefaultDepth 24
Subsection "Display"
Depth 8
Modes "1280x1024" "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 16
Modes "1024x768" "800x600" "640x480"
ViewPort 0 0
EndSubsection
Subsection "Display"
Depth 24
Modes "800x600" "640x480"
ViewPort 0 0
EndSubsection
EndSection
# **********************************************************************
# ServerLayout sections.
# **********************************************************************
Section "ServerLayout"
Identifier "Simple Layout"
Screen "Screen 1"
InputDevice "Mouse1" "CorePointer"
InputDevice "Keyboard1" "CoreKeyboard"
EndSection
