https://bugzilla.kernel.org/show_bug.cgi?id=71461
--- Comment #16 from Tom Yan tom.ty89@gmail.com --- I tried to remove the DisplayPort-specific code in radeon_connector_hotplug() of radeon_connector.c and everything seems to work like a charm. What is the code supposed to do actually?
Though, btw, it seems that only turning off my DP monitor in X would make it "dead". Doing that in console (or switch to console before turning it on) does not.
I am with kernel 3.13.8 now.