id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
14539	Extreme screen flashing and guest unusable	kekeke		"While this issue started on Windows 10 and I understand there are[[BR]]
problems there, I have since rebuilt the host machine from scratch[[BR]]
with Windows 8.1 and am still experiencing problems although they have[[BR]]
changed some.
For the history of this issue please see:
https://forums.virtualbox.org/viewtopic.php?f=6&t=69906&p=334049#p334049

Environment
> VirtualBox 5.0.2
> Latest extension pack installed
> Windows 8.1 host
> Ubuntu 14.04 guest

Current problem
1) When starting up the guest the guest window flashes. It is very extreme
2) On some starts when guest starts in full screen mode, the minibar is visible during startup but then is no [[BR]]
longer visible. 
3) The guest periodically becomes unresponsive. [[BR]]
The screen looks perfectly normal but does not respond[[BR]]
to mouse clicks. I have assumed keyboard input as well but to [[BR]]
be completely accurate, I have not tested that. However, it does[[BR]]
seem that the UI has frozen. Nothing within the guest window responds[[BR]]
including the OS bar at the top of the Ubuntu window where you[[BR]]
can shut-down the OS.
4) The screen will be come black
* This is happening in fullscreen and normal view.

I have attached logs
I marked this critical as I'm unable to use my dev environment[[BR]]
and get work done. I understand it may not be critical in your view.
Sincerely,
Karl"	defect	new	GUI	VirtualBox 5.0.2				Linux	Windows