linux 64 bit guest problem

Discussions related to using VirtualBox on Linux hosts.
Post Reply
drb1
Posts: 4
Joined: 9. Mar 2009, 17:32

linux 64 bit guest problem

Post by drb1 »

VT-x/AMD-V hardware acceleration has been enabled, but is not operational. Your 64-bit guest will fail to detect a 64-bit CPU and will not be able to boot.
Please ensure that you have enabled VT-x/AMD-V properly in the BIOS of your host computer.
I've just updated to virtualbox 3.1. I've been running virtualbox in a linux 64 bit host for some time; on trying to access a 64 bit linux guest, I get the above error - has something changed from 3.0.12 to cause this to happen?
Sasquatch
Volunteer
Posts: 17798
Joined: 17. Mar 2008, 13:41
Primary OS: Debian other
VBox Version: PUEL
Guest OSses: Windows XP, Windows 7, Linux
Location: /dev/random

Re: linux 64 bit guest problem

Post by Sasquatch »

There should be no hardware-V changes since 3.0.12, so it seems that something on the Host changed along the way. Double check your system, maybe some other virtualizer got installed like KVM and is now using VT-x/AMD-V.
Read the Forum Posting Guide before opening a topic.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org

Retired from this Forum since OSSO introduction.
drb1
Posts: 4
Joined: 9. Mar 2009, 17:32

Re: linux 64 bit guest problem

Post by drb1 »

I've had kvm installed for some time, running 3.0.12 this morning without any problems.

I've just removed kvm module (modprobe -r kvm_amd) and it's now running OK.

Thanks,

drb
robatino
Posts: 164
Joined: 17. Dec 2008, 21:15

Re: linux 64 bit guest problem

Post by robatino »

I just started seeing this on my 64-bit F12 host with VB 3.1 after applying the latest batch of F12 updates. Yesterday, right after updating VB, it was still working properly. The same fix (modprobe -r kvm_amd) works for me in making my 64-bit guests run again. The kernel update is not the culprit since the same issue exists running the older kernel.
Sasquatch
Volunteer
Posts: 17798
Joined: 17. Mar 2008, 13:41
Primary OS: Debian other
VBox Version: PUEL
Guest OSses: Windows XP, Windows 7, Linux
Location: /dev/random

Re: linux 64 bit guest problem

Post by Sasquatch »

The problem is the batch of updates you got. Some distro's automatically install recommended or suggested packages, and KVM seems to be one of them. Remove and purge the package and you should no longer need to remove the module at run time, because the module will no longer exist.

File a bug report for your distro that is breaks already existing virtualizers by automatically installing KVM. They should never install such packages automatically.
Read the Forum Posting Guide before opening a topic.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org

Retired from this Forum since OSSO introduction.
robatino
Posts: 164
Joined: 17. Dec 2008, 21:15

Re: linux 64 bit guest problem

Post by robatino »

I chose to install Fedora's Virtualization package group. Previously there was no interference with VirtualBox. I'm sure there will be a lot of complaints and I'll manually unload the module until there is a fix.
Sasquatch
Volunteer
Posts: 17798
Joined: 17. Mar 2008, 13:41
Primary OS: Debian other
VBox Version: PUEL
Guest OSses: Windows XP, Windows 7, Linux
Location: /dev/random

Re: linux 64 bit guest problem

Post by Sasquatch »

The fix is to remove the virtualization package. Why did you install it anyway? There is no benefit from it, only downsides like this.
Read the Forum Posting Guide before opening a topic.
VirtualBox FAQ: Check this before asking questions.
Online User Manual: A must read if you want to know what we're talking about.
Howto: Install Linux Guest Additions
Howto: Use Shared Folders on Linux Guest
See the Tutorials and FAQ section at the top of the Forum for more guides.
Try searching the forums first with Google and add the site filter for this forum.
E.g. install guest additions site:forums.virtualbox.org

Retired from this Forum since OSSO introduction.
Post Reply