startx fails on Clamshell iBook with wsfb

[Joshua Krämer <joshua.kraemer%gmail.com@localhost>]

Hello,

I'm trying to setup Xorg on my Clamshell iBook (300 MHz).  It has an
ATI Rage Mobility AGP card (4 MB).

# pcictl pci0 list
000:11:0: Apple Computer UniNorth AGP Interface (host bridge)
000:16:0: ATI Technologies Rage L Mobility (VGA display, revision 0x64)

# uname -a
NetBSD Klapprechner2 6.1.3 NetBSD 6.1.3 (GENERIC) macppc

"X -configure" fails with "No devices to configure. Configuration
failed."

I have created the following /etc/xorg.conf:

Section "Device"
    Identifier  "ATI Rage Mobility"
    Driver      "wsfb"
EndSection

Then, "X -config /etc/xorg.conf" works.  It shows the black/white
background with a movable cursor.

However, "startx" doesn't work.  The screen becomes black for a second,
then I'm thrown back to the console without an error message.

# < /var/log/Xorg.0.log grep WW
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
[   723.579] (WW) `fonts.dir' not found (or not valid) in 
"/usr/X11R7/lib/X11/fonts/misc/".
[   723.579] (WW) `fonts.dir' not found (or not valid) in 
"/usr/X11R7/lib/X11/fonts/TTF/".
[   723.580] (WW) `fonts.dir' not found (or not valid) in 
"/usr/X11R7/lib/X11/fonts/Type1/".
[   723.580] (WW) `fonts.dir' not found (or not valid) in 
"/usr/X11R7/lib/X11/fonts/75dpi/".
[   723.581] (WW) `fonts.dir' not found (or not valid) in 
"/usr/X11R7/lib/X11/fonts/100dpi/".
[   723.592] (WW) xf86EnableIO -1
[   723.592] (WW) Can't map IO space!
[   723.646] (WW) Falling back to old probe method for wsfb
[   723.647] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
[   723.647] (WW) ioctl(WSDISPLAYIO_GET_FBINFO) failed, falling back to old 
method
[   723.665] (WW) No HW cursor support found
[   725.499] (WW) <default pointer>: No Device specified, looking for one...

There are no "(EE)" error lines.

# < /var/log/Xorg.0.log tail
[   725.504] (**) Option "Protocol" "wskbd"
[   725.505] (--) <default keyboard>: Keyboard type: ADB
[   725.505] (**) Option "XkbRules" "base"
[   725.505] (**) Option "XkbModel" "pc105"
[   725.505] (**) Option "XkbLayout" "us"
[   725.505] (II) XINPUT: Adding  extended input device "<default keyboard>" 
(type: KEYbOARD)
[   726.038] (II) UnloadModule: "mouse"
[   726.038] (II) Unloading mouse
[   726.039] (II) UnloadModule: "kbd"
[   726.039] (II) Unloading kbd

I'm using the default .xinitrc, which tries to start twm.

Any hints and help are appreciated.

Kind regards,
Joshua Krämer