[syslinux] Dualhead issue

[Ady Ady]

> On Wed, 16 Aug 2017 17:34:45 -0400, Gene Cumm wrote:

> >It's a BIOS situation really.
> 
> But the BIOS is shown on both monitors at the same time.
 
 
Your BIOS should have some kind of option to set which video output 
gets priority. My guess would be that you have the priority set to your 
D-sub output as first device. In your firmware (aka BIOS), there might 
be some (priority?) option to output to "both" (or to "all") video 
devices. If this is not possible, you might still have the possibility 
to change the display priority to some other video output (where you 
plug in you LCD screen).

These options should be part of your (video) firmware, so this is the 
reason for the expression "It's a BIOS situation really".

Regards,
Ady.