Jaton VIDEO498PCITWIN User Manual

 

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Q:  Multiple images or unreadable screen after loading video driver. 

There are a variety of reasons why the display might be distorted. One common 
reason is a monitor mis-match. Some older multi-frequency monitors are unable 
to switch video modes without being turned off, then turned on again. 

If the problem occurring in windows, make sure that you have loaded that proper 
video driver, and that the driver is compatible with the monitor being used. Try re-
configuring your application software to use a compatible video mode. If problem 
persist in windows, load the standard generic VGA driver. The generic VGA 
driver should function properly with virtually every video board and VGA (or 
SVGA) monitor available. 

If that is an unsatisfactory solution, you may have to upgrade to a monitor that 
supports the desired video mode. 

Some new monitors are also synchronizing this problem because built-in DDC 
(Data-Digital-Channel) feature. Sometime that DDC automatically setup the 
display frequency without loading video driver.  Try to turn it off, or change 
settings of monitor type in your system. 

Q:  Selection of color, resolution and refresh rate combination that always backs 
to default after restart the system. 

Accordingly, there must be a bug (defected source-code) in video driver, or in the 
system.  Debug the source-code or fix the error in video driver that should be 
done by the driver developer. Likewise, upgrade the video driver from the 
manufacturer or from the original software developer is necessary.