I found some info regarding this on www.nvnews.net and in the README for the
nvidia driver - apparently the "UseEdidDpi" option has some problems in the
8174 version of the driver. I added the following lines to the "Device"
section of my xorg.conf and the problem seems to be solved.
Option "UseEdidDpi" "FALSE"
Option "DPI" "76 x 72"
Thanks
--
David Bruce