VirtualBox

Ticket #15178 (closed defect: fixed)

Opened 16 months ago

Last modified 16 months ago

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

Reported by: Fifo_F Owned by:
Priority: major 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

Screen Shot 2016-02-25 at 13.10.52.png Download (48.9 KB) - added by Fifo_F 16 months ago.
Screenshot of VT-x enabled (bottom right corner)
Screen Shot 2016-02-25 at 13.07.44.png Download (75.6 KB) - added by Fifo_F 16 months ago.
Screenshot of VM settings showing VT-x disabled

Change History

Changed 16 months ago by Fifo_F

Screenshot of VT-x enabled (bottom right corner)

Changed 16 months ago by Fifo_F

Screenshot of VM settings showing VT-x disabled

comment:1 follow-up: ↓ 2 Changed 16 months ago by 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.

comment:2 in reply to: ↑ 1 Changed 16 months ago by Fifo_F

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 follow-up: ↓ 4 Changed 16 months ago by 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.

comment:4 in reply to: ↑ 3 Changed 16 months ago by Fifo_F

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 Changed 16 months ago by frank

  • Status changed from new to closed
  • Resolution set to fixed

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

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