X on PowerBook 3400c Debian sid

[Paul Scott <waterhorse@ultrasw.com>]

I've just gotten X somewhat useably configured on a PowerBook 3400c but 
X only occupies about 80% of the screen.  I'm a Mac Linux newbie.

Using dpkg-reconfigure xserver-xorg (sid ) and choosing the Chips and 
Technologies F65550,etc. I get the following.

Section "Device"
       Identifier      "Chips and Technologies F65550"
       Driver          "chips"
       BusID           "PCI:0:17:0"
       Option          "UseFBDev"              "true"
EndSection

Section "Monitor"
       Identifier      "Generic Monitor"
       Option          "DPMS"
EndSection

TIA for any ideas,

Paul Scott