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Ticket Resolution Summary Owner Reporter
#14835 duplicate Invisible drag-and-drop window blocks mouse interaction with guest -> duplicate of #14743 Sam Morris
Description

Occasionally my mouse stops working in the guest. It turns out there is an invisible window covering the screen that blocks all interaction with the windows on the screen.

Running xwininfo and clicking on the screen outputs the following:

xwininfo: Window id: 0xa00001 "VBoxClientWndDnD"

  Absolute upper-left X:  0
  Absolute upper-left Y:  0
  Relative upper-left X:  0
  Relative upper-left Y:  0
  Width: 1920
  Height: 1148
  Depth: 0
  Visual: 0x21
  Visual Class: TrueColor
  Border width: 0
  Class: InputOnly
  Colormap: 0x0 (not installed)
  Bit Gravity State: ForgetGravity
  Window Gravity State: NorthWestGravity
  Backing Store State: NotUseful
  Save Under State: no
  Map State: IsViewable
  Override Redirect State: yes
  Corners:  +0+0  -0+0  -0-0  +0-0
  -geometry 1920x1148+0+0

xkill does not kill the window, but if I kill off both the VBoxClient --draganddrop processes then the window goes away.

#15429 obsolete Slow screen updates after maximizing gvim window Sam Morris
Description

If I run gvim and then maximize the window, Virtualbox stops updating the screen. Input is still recognized and processed by the virtual machine, it's just the video that stops.

If Virtualbox loses the focus then when it regains the focus, it will update the screen a single time. This behaviour persists until the VM is restarted.

#19788 fixed Auto-resize Guest Display disabled with VMSVGA Sam Morris
Description

Now that VMSVGA is the default for Linux guests, I have changed my VM over to using it.

I have found that the 'audio-resize guest display' option is unavailable.

Some error messages can be obtained from VBoxClient with:

$ VBoxClient -v -f --vmsvga
VMWARE's ctrl extension is available. Major Opcode is 128.
Failed to register resizing support, rc=VERR_INVALID_FUNCTION
Failed to get display change request, rc=VERR_ACCESS_DENIED

Corresponding kernel messages:

Aug 03 14:15:54 kernel: Service: Display SVGA X11
Aug 03 14:15:54 kernel: VMWARE's ctrl extension is available. Major Opcode is 128.
Aug 03 14:15:54 kernel: Failed to register resizing support, rc=VERR_INVALID_FUNCTION
Aug 03 14:15:54 kernel: Denying userspace vmm call type 0x000051
Aug 03 14:15:54 kernel: Failed to get display change request, rc=VERR_ACCESS_DENIED

It's not clear whether this option is not supported under VMSVGA or not. If not then that should be documented somewhere.

I'm seeing this with VirtualBox 6.1.12 but that option isn't available in the bug tracker(!)

There are a couple of similar bugs:

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