It is recommended that you generate an XF86Config file using the
`XF86Setup' or `xf86config' programs, which should
produce a working
high-resolution 8bpp configuration, although the modelines might need
reshuffling for optimal screen refresh. You may want to include mode
timings in the Monitor section that better fit your monitor
(e.g. 1152x864 modes).
In order to prevent stress on your monitor, it is recommended that you turn off your monitor during clock probing (X -probeonly), which also happens if you start the server with no Clocks line present in the Device section of the XF86Config. The following Clocks line can be used for the Hercules Stingray Pro, Pro/V and older 64/V using an ARK Logic clock generator (so there's no need to probe clocks for this card, just insert the following line in the Device section of the XF86Config file):
Clocks 25.175 28.3 40 72 50 77 36 44.9
Clocks 128.43 118.8 80 31.5 110 63.96 74.19 95
The higher frequencies have not been tested, there might be a
mismatch in the 60-80 MHz range.