Xorg not working on PPC

[Geoff Down]

Hello List,
 I'm installing Linux on a PowerMac G4. Since the installation with
 Gnome failed with a black-and-white horizontal stripey screen and
 frozen system, I was advised to try Xorg instead.
My first attempt resulted in 'no screens found'. After a reinstall of
the OS however, I now have the stripey screen again if I use 'startx'.
Attached are the log from running 'startx', and from running 'X -cfg'.
Here are my video card and display details.
Chipset Model:  ATY,Rage128Pro
  Type:   Display
  Bus:    AGP
  Slot:   SLOT-1
  VRAM (Total):   16 MB
  Vendor: ATI (0x1002)
  Device ID:      0x5046
  Revision ID:    0x0000
  ROM Revision:   113-72701-130
  Displays:
831W:
  Resolution:     1360 x 768 @ 60 Hz
  Depth:  32-bit Color
  Core Image:     Not Supported
  Main Display:   Yes
  Mirror: Off
  Online: Yes
  Quartz Extreme: Not Supported

Can you help please? I'm new to Linux as well, so assume I know nothing
about its internal workings.
Thanks,
Geoff Down


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