VirtualBox

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Ticket Resolution Summary Owner Reporter
#7248 worksforme AMD-V enabled but not operational ldp
Description

I have an AMD Phenom X4 9850 and an M3N-HT Deluxe mainboard. For the past 7 months everything worked perfectly, but I rebooted yesterday and when I tried starting any of my virtual machines, got this error:

"VT-x/AMD-V hardware acceleration is enabled but not operational. Please ensure that you have enabled it in the BIOS of your host computer."

I've redone the settings, power cycled, reseated the RAM, restored BIOS settings to factory defaults, but nothing works.

#5087 invalid AMD-V is enabled but has no features homerhomer
Description

When enabling AMD-V with Virtualbox I noticed that it doesn't enable the feature. I'm currently using this with Ubuntu 9.04 non-open source edition. (VirtualBox 3.0.6 r52128 linux.amd64)

When looking through the VBox.log file I noticed this;

00:00:03.837 HWACMM: cpuid 0x80000001.u32AMDFeatureECX = 1f
00:00:03.837 HWACMM: cpuid 0x80000001.u32AMDFeatureEDX = ebd3fbff
00:00:03.837 HWACCM: AMD-V revision                    = 1
00:00:03.837 HWACCM: AMD-V max ASID                    = 64
00:00:03.837 HWACCM: AMD-V features                    = 0

Also posted in the forums http://forums.virtualbox.org/viewtopic.php?f=7&t=21459

#6127 duplicate AMD-V is not work on VirtualBox 3.1.2 OSE Joseph Poon
Description

I have a VB 3.1.2 OSE hosting on FreeNAS(FreeBSD 7.2). i use AMD Athlon(tm) II X2 240 Processor, and Zotac GeForce 8200 clipset motherboard. i also enable "Virtualization" and "Secure Virtual Machine Mode" in BIOS. i have install a Windows 2008 R2 guest OS on VB. But AMD-V is not work within Windows 2008 R2. i use amd tools to test the guest os, it said that it is not enable AMD-V. enclosed please find the VBox.log for your reference.

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