Fixed: Shutdown/sleep/hibernate left the display on. (it WAS fixed... but later changes broke it... sorry 8-} )
Well fixed half way so to say
The display crashes when returning from sleep.
It turns off when going to sleep, but when waking up the display goes on but nothing is displayed and an exception is created in the log.
The only thing to get display back in control is to shut down MP and start it again. But as soon as you enter sleep and get back the display is "broken".