Relevant intel-gfx thread:
In short, at least with 2.6.31 kernels, one can not listen for hotplug interrupts usefully in the X server without also turning them off for TV outputs (for machines with an actual TV connector). Otherwise the X server gets stuck in a loop constantly reprobing the outputs.
Created attachment 30206 [details] [review]
disable the TV hotplug in course of TV detection
Will you please try the debug patch on the Eric's drm-intel-next tree and see whether the issue still exists?
The following commit is already shipped in drm-intel-next tree. And this bug can be fixed by the following commit. So this bug will be marked as resolved.
Author: Adam Jackson <email@example.com>
Date: Fri Nov 20 13:22:44 2009 +0800
drm/i915: disable the interrupt hotplug for integrated TV output
on Jul 26, 2016 at 12:11:02.
(provided by the Example extension).