﻿id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
13487	Ubuntu Desktop 14.04.1 freezes when restarting from saved state (3D)	Emilio		"Hi,
my set-up is as a host Windows 7 64 sp1 with VirtualBox 4.3.16r95972 and as a guest with Ubuntu Desktop 14.04.1 32 bits and Guest Additions installed.

The problem is that when I save the state (not turn-off but save) of the vm and then when I restart it the ubuntu vm freezes up, sometimes with a black screen and sometimes showing the desktop but you can't click on anything leaving me the only option to turn of the vm. Virtualbox works ok its only the ubuntu vm.

I've tried the latest VirtualBox test versions 4.3.17-96342 and extension pack version 4.3.17-96238 but it still fails to restore properly.

I also tried installing a clean Ubuntu Desktop 14.04.1 32 bits and Ubuntu Desktop 14.04.1 64 bits but it still fails to restore properly with both images.

Also tried installing XUbuntu Desktop 14.04.1 32 bits and it does restore properly.

My setting with virtualbox are 3d Acceleration on and 256MB Graphics memory (I have a Nvidia GeForce GT240 1GB video card)  and it does run with the 3d accelaration turned on in unity.
Checked with the command 

/usr/lib/nux/unity_support_test -p

It reports On.

But if I disable the 3D Acceleration in Virtualbox and save the vm when I restore it restores properly but off course like that ubuntu is unusable slow.
So I think it's related to the unity 3d desktop and virtualbox 3d support"	defect	closed	3D support	VirtualBox 4.3.16	fixed	ubuntu, freezes, save, restore		Linux	Windows
