Mouse problems with host dual-head

[tatsujin]

I'm haing a mouse problem, which I associate with the dual monitor setup I use.

For example I have the main screen on the left monitor (with the VirtualBox [VB] window) and another monitor to the right of this one.

This of course only applies to when the mouse is captured/locked by VB. Both windows guest and linux guest. So far, this seems to occur regardless of guest additions being installed or not.

My problem is that if I move the mouse to the right at sufficient *speed* it seems to hit an "invisible wall", which can be in the middle of the VB screen. Moving it left will make the cursor move left again. Moving once more to the right, but at significantly lower speed might make it possible for the cursor to go past this "invisible wall".

Moving in any other direction than right works just perfectly.

I get the feeling that when it hits that invisible wall, the actual (host) cursor has left the current monitor and gone to the right monitor, so VB stops receiving mouse events, or something.

That this happens only when the mouse it moved at a relatively high speed leads me to relate this to mouse acceleration settings in the host. However, I've been unable to fix the problem by testing various settings.