So you still have it. But in fact your case not so similiar like mine.
Perhaps it is OK in your case. I mean it just reflects that there is problem with EDID.
In my case this ERROR repeats in dmesg many times.
And I have this: i915 0000:00:02.0: LVDS-1: EDID invalid.
And its happen even with mainline kernel and xorg from edgers.
So you still have it. But in fact your case not so similiar like mine.
Perhaps it is OK in your case. I mean it just reflects that there is problem with EDID.
In my case this ERROR repeats in dmesg many times.
And I have this: i915 0000:00:02.0: LVDS-1: EDID invalid.
And its happen even with mainline kernel and xorg from edgers.