How do you know? (Was: Setting Vertical refresh)

[Alan Dayley]

I have a basic question: how do you know it when the vertical refresh is the 
problem and not, for example the horizontal refresh?

I have an old computer that I have not dug into X windows configuration yet.  
I know it runs but the automatic settings didn't pick the right values.  I 
just don't know where to start tinkering.  I still need to read the X config 
docs so I have some idea what all those settings are in the config files.

Alan

On Monday 10 December 2001 11:01 am, you wrote:
> Using Redhat 7.2 and finding it's pushing my Matrox G450 and monitor to
> frequencies beyond the monitors capabilities. The specs list at 160Hz max.
> I want the Vert. refresh to be set at 85Hz.
> How can I force this setting?