While my research has not been painstaking, I've googled about a bit and read through the pertinent sections of the the user's manual and VirtualBox's FAQ. I am running VirtualBox 2.1.4 on the 64-bit version of Red Hat Enterprise Linux 4. I have a Core 2 Q6600 processor. I have enabled VT-X in my BIOS, and enabled it for all my virtual machines using the configuration GUI. Yet, when I actually start a VM, VT-X is never enabled - though the machine does function correctly in most other respect.
It might be related that the vboxdrv /dev/ entry has the wrong permissions (as far as I understand what it should be): it is created with the permissions 0600. I also have no other vbox* entries in /dev/ (shouldn't there be entries used by the virtual networking and USB features in there?), and the USB pass-through feature does not work. I'm kind of thinking that udev may be misbehaving, and I've tried poking at vboxdrv's rules file in udev, but that hasn't helped - I'm kind of thankful that I at least didn't seriously break anything. Simply manually chmoding /dev/vboxdrv/ to 0660 (and 0666) has not resolved the issue.
VT-X was working with the version of VirtualBox before 2.0 - I believe my problems started with I upgraded. However, I am aware of the issues with upgrading VirtualBox, and I've tried completely uninstalling and re-installing VirtualBox, and that hasn't helped.
I'm not sure what logs I can supply that would be of any use. I would be more than happy to supply any needed log files, if anyone would be so kind as to help me out.
Can't get VT-X to work on Red Hat Enterprise Linux 4 host
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Sasquatch
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Re: Can't get VT-X to work on Red Hat Enterprise Linux 4 host
My /dev/vboxdrv has crw------- as mode, owned by root and vboxusers. Are you a member of that group?
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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
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Re: Can't get VT-X to work on Red Hat Enterprise Linux 4 host
My /dev/vboxdrv has the same permissions and ownership, and I am a member of the vboxusers group.
I looked in /var/log/vbox for useful log files, but that directory is empty; I checked dmesg for any vbox-relevant messages, but there did not appear to be any errors. Are there other places where I could get detailed logging information, and are there any log files that I could supply that would be helpful?
Thanks for taking the time to respond.
I looked in /var/log/vbox for useful log files, but that directory is empty; I checked dmesg for any vbox-relevant messages, but there did not appear to be any errors. Are there other places where I could get detailed logging information, and are there any log files that I could supply that would be helpful?
Thanks for taking the time to respond.
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Sasquatch
- Volunteer
- Posts: 17798
- Joined: 17. Mar 2008, 13:41
- Primary OS: Debian other
- VBox Version: VirtualBox+Oracle ExtPack
- Guest OSses: Windows XP, Windows 7, Linux
- Location: /dev/random
Re: Can't get VT-X to work on Red Hat Enterprise Linux 4 host
Logs of the VMs are saved in their own config folder (~/.VirtualBox/<VM name>/Logs) by default.
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.
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.