Sorry if you have done the logical. But forget OpenLP, what happens if you connect the problematic displays in when OpenLP is not running?
If all is good, then make sure they are disconnected, open OpenLP and then go to the Monitors Setting and set Primary display as default. Then you should be able to connect the external monitors, tweak their settings and then and only then, change the monitor settings in OpenLP to them. If that fails please go to debug mode (command prompt #openlp -l debug) after crash you will find your debug log in /home/yourusername/.cache/openlp/openlp.log please submit it as noted elsewhere. <br>
Hope this helps; as always, if it helps, lets know, if not appreciate what you did to sort the issue out so others can benefit from this info.<br><br>
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