LVDS display issue

[David Faulkner]

Hello,

So I am using the Beaglebone Black to run a LVDS display. Specs are:

Model- G104XL-L03

Pixel Number (Resolution)- 1024x768

Size- 10.4' 

Interface- LVDS

18 or 24 Bit 

I am using a SN75LVDS83B to convert the parallel data (if that is relevant). 

At first I could not get the display to show anything even though BBB was running and the LVDS lines seemed to be active.

Finally I plugged in my HDMI to a monitor and left the LVDS display plugged in and it started working. 

At first I thought it was because it was pulling the profile from the HDMI monitor, which made sense because it was running at its resolution. 

But when I powered down the HDMI monitor the LVDS display still worked. So I unplugged the HDMI connector and then the LVDS display goes blank.

Obviously the BBB build is compiled for 16 bit so the colors are off, I can enable the 24 bits later. But I am trying to break the HDMI plug dependency. 

Is disabling the HDMI port going to change this?