i've had the same error. Installing & Setting up Elementary OS with two Monitors was no Problem.
But when i removed one to use it for another PC and plug it back in it happend.
The Display Application crashes as soon as i "checkbox" the second Monitor for use.
I also fixed it with arandr (xrandr + GUI),
but i had to set the Monitors to mirrored first to set it at the Displays App to segmentation.
Hello,
i've had the same error. Installing & Setting up Elementary OS with two Monitors was no Problem.
But when i removed one to use it for another PC and plug it back in it happend.
The Display Application crashes as soon as i "checkbox" the second Monitor for use.
I also fixed it with arandr (xrandr + GUI),
but i had to set the Monitors to mirrored first to set it at the Displays App to segmentation.