Open requested to merge JakubVanek/xfce4-settings:bugfix/no-edid-displays into master
This way, display profiles can be supported even if one or more displays don't support EDID. Xfce will not be able to distinguish between different displays of this kind on the same output, just that they're present.
This change fixes the linked issue in my setup. However, I'm not sure it won't break other atypical setups.