https://bugs.freedesktop.org/show_bug.cgi?id=91371
--- Comment #7 from Andy Furniss adf.lists@gmail.com --- (In reply to Andy Furniss from comment #4)
Another difference I notice between TV and monitor.
I notice the TV has a different trigger time (what ever that is!) from the working monitor.
Hmm well more messing around shows the it's variable on the monitor just got -
trigger_time: 5550.580103154