Comment 9 for bug 194552

Wanted to add that this is a serious bug (think it's the same, correct me if not) if you want to use a small windowmanager like icewm, cause there is no gnome-display-properties. So you have to run xrandr manually to fix this - not everyone knows this, not every windowmanager likes it. Using Modelines and deleting unwanted Modes, which was in the past the best method, has no effect on the startup of the XServer anymore, even if the Modeline is later available via xrandr.