Multiple screen setup, main screen keeps changing

[arcademode]

After booting down my arcade cabinet for a couple of days, then booting it back up the main monitor will switch to one of the "third screen" monitors, instead of using my main monitor.  The main monitor selection is stable about 50% of the time, otherwise the third screen becomes the main monitor.  Is my main monitor going to sleep too fast?  Would that cause a divergent enumeration of the monitors in windows?  What else can I look at to avoid this hiccup? 

[JoeViking245]

1 hour ago, arcademode said:

After booting down my arcade cabinet for a couple of days, then booting it back up the main monitor will switch to one of the "third screen" monitors, instead of using my main monitor.  The main monitor selection is stable about 50% of the time, otherwise the third screen becomes the main monitor.  Is my main monitor going to sleep too fast?  Would that cause a divergent enumeration of the monitors in windows?  What else can I look at to avoid this hiccup? 

You mentioned third screen a couple times.  If you're using the ThirdScreen plugin, you might be best to post on its Support page.

ThirdScreen Plugin for Platform Video Marquees, 3+ Screen Support, and more - Third-Party Applications and Plugins (Released) - LaunchBox Community Forums

 

If I misunderstood, hopefully someone can help you here. 😊

 

[arcademode]

On 8/11/2025 at 6:27 PM, JoeViking245 said:

You mentioned third screen a couple times.  If you're using the ThirdScreen plugin, you might be best to post on its Support page.

ThirdScreen Plugin for Platform Video Marquees, 3+ Screen Support, and more - Third-Party Applications and Plugins (Released) - LaunchBox Community Forums

 

If I misunderstood, hopefully someone can help you here. 😊

 

I don't believe it's a problem with Third Screen, I think it's a problem with which monitor Big Box is seeing first and assigning as the primary.

[LCS213]

I too have been experiencing this problem.