id	summary	reporter	owner	description	type	status	priority	component	version	resolution	keywords	cc	guest	host
1685	Unable to run multiple VMs with AMD-V properly -> fixed in SVN/1.6.6	concord		Originally posted on forum. I have tried to remove guest additions but nothing changes. Once a Windows VM starts when another presents already, the VM will hangup/BSOD. (VBOX GUI still alives)\r\n\r\n=====\r\nJust updated to 1.6.2. With AMD-V turned on, I can run any one of the VMs I have smoothly. However if I tried to open another Windows VM, all Windows VMs (new and current) will freeze or BSOD. If starting ubuntu VM and Windows VM simutaneously (with AMD-V), it's highly possible to have some error message during ubuntu initialization. \r\n\r\nAll the VMs I have can run properly without AMD-V. It seems that the current AMD-V support still have some problems dealing with multiple instances. \r\n\r\nOS: Vista x64 \r\nHW: Phenom 9550, 790FX, 8G DDR2.	defect	closed	major	VMM/HWACCM	VirtualBox 1.6.2	fixed	AMD-V		other	other