video mirror on iBook

[Tony]

I thought I would give it a try with my 600MHz ibook (model M8600LL/A)
running Hoary.  My previously working xorg.conf file included the
following...

Section "Device"
        Identifier      "ATI Technologies, Inc. Radeon Mobility 9000 (M6 LY)"
        Driver          "ati"
        BusID           "PCI:0:16:0"
        Option          "UseFBDev"              "true"
EndSection

However after making the following modifications (below), I did get an
image on my external video, however it was fluctuating so it was
difficult to read.  Also, a side effect was that my ibook screen
washed out completely and was unuseable.  I could get by reading on my
external video to return the xorg.conf file back to it's original
form.

Section "Device"
        Identifier      "ATI Technologies, Inc. Radeon Mobility 9000 (M6 LY)"
        Driver          "ati"
        BusID           "PCI:0:16:0"
        Option          "UseFWPLL"              "true"
        Option          "MergedFB"              "true"
        Option          "CRT2Position"          "Clone"
EndSection

I also tried changing the driver from "ati" to "radeon" but that did
not make a difference.

Tony