VirtualBox

Opened 8 years ago

Closed 8 years ago

#15178 closed defect (fixed)

VT-x/AMD-V stays enabled even if I uncheck it in Settings

Reported by: Fifo F. Owned by:
Component: VMM/HWACCM Version: VirtualBox 5.0.14
Keywords: VT-x, AMD-V, Cc:
Guest type: all Host type: Mac OS X

Description

VT-x/AMD-V stays enabled even if I uncheck it in the VM’s settings window – nothing helps to disable it.

VBox.log and screenshots are attached.

The guest freezes if I try to do anything in it. Also I’m encountering graphical glitches in it.

I could disable virtualisation completely in earlier versions of VirtualBox.

Attachments (2)

Screen Shot 2016-02-25 at 13.10.52.png (48.9 KB ) - added by Fifo F. 8 years ago.
Screenshot of VT-x enabled (bottom right corner)
Screen Shot 2016-02-25 at 13.07.44.png (75.6 KB ) - added by Fifo F. 8 years ago.
Screenshot of VM settings showing VT-x disabled

Download all attachments as: .zip

Change History (7)

by Fifo F., 8 years ago

Screenshot of VT-x enabled (bottom right corner)

by Fifo F., 8 years ago

Screenshot of VM settings showing VT-x disabled

comment:1 by Frank Mehnert, 8 years ago

That's expected behavior. The only problem is that we need to properly reflect the state which is currently not done. On Mac OS X it's not possible to disable VT-x. All Intel processors which were ever used by Apple support VT-x so there is no reason to support non-VT-x virtualization on Mac OS X.

in reply to:  1 comment:2 by Fifo F., 8 years ago

Replying to frank:

That's expected behavior. The only problem is that we need to properly reflect the state which is currently not done. On Mac OS X it's not possible to disable VT-x. All Intel processors which were ever used by Apple support VT-x so there is no reason to support non-VT-x virtualization on Mac OS X.

Older OSes like Windows 2.x/3.x seem to hate VT-x and display graphical glitches all over the screen. How do I fix that?

comment:3 by Frank Mehnert, 8 years ago

If you experience problems with VT-x then this is a different issue and you should open a separate ticket for it. But supporting that ancient (older is not the right word) Windows versions has low priority. No question this should be fixed but there are more important problems.

in reply to:  3 comment:4 by Fifo F., 8 years ago

Replying to frank:

If you experience problems with VT-x then this is a different issue and you should open a separate ticket for it. But supporting that ancient (older is not the right word) Windows versions has low priority. No question this should be fixed but there are more important problems.

Well, I’ll just give up trying to run older Windows versions under VBox/trying to disable VT-x.

comment:5 by Frank Mehnert, 8 years ago

Resolution: fixed
Status: newclosed

Fix is part of VBox 5.0.16 (VT-x cannot be disabled any longer).

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