The Slackware Linux 2.3 kernel on bootup complains about an unknown
PCI device. This probably causes X, when run in "-probeonly" mode,
to return only 1 clock value for the Clocks line in a device section.
Any info on any patches that can make the kernel recognize the
Trident 9660 PCI device, or on getting "X -probeonly" to return all
the clocks available on the graphics card. (If it helps, I have an
IBM Aptiva running Windows 95 with Linux in a separate partition).
Armed with the clocks available on my graphics card, I can compute the
Modelines for my monitor.