The following two web pages seem to create the Modelines I want:
[1] http://www.dkfz-heidelberg.de/spec/linux/modeline/
[2] http://www.hut.fi/Misc/Electronics/faq/vga2rgb/calc.html
In particular, for [EMAIL PROTECTED], [1] generates:
# V-freq: 60.00 Hz // h-freq: 63.73 KHz
Modeline "1280x1024" 109.62 1280 1336 1472 1720 1024 1024 1026 1062
But I have two problems with this:
1) A lot of google stuff say modelines are obsolete in Modern XFree86 -
it will just autoselect the mode your monitor supports. Is there a
better way to achieve [EMAIL PROTECTED]
2) I insert the modeline into the Monitor section:
Section "Monitor"
[snip]
ModeLine "1280x1024" 109.62 1280 1336 1472 1720 1024 1024 1026 1062
and my only Display mode is 1280x1024, but still my monitor says it is
running at 75hz vert..