Bad capture/release behaviour when in fullscreen-mode on 2 of 3 monitors

[Justice]

I use a triple-head Ubuntu system to host a dual-head Windows 7 guest. The third monitor is used primarily for host terminal windows and thunderbird.

When the guest is in full-screen mode, I frequently observe the exact wrong mouse and keyboard capture state. This is usually correlated with a failure to render correctly in the third monitor.

I can sometimes correct the capture state by clicking once on the VirtualBox's auto-hidden system menu. When that doesn't work, I must <host>-F twice to revert to windowed mode and back.

The behaviour is observed more than once per hour. I have seen it with both ATI and NVidia, open source and restricted graphics drivers. Both with 2D acceleration enabled and disabled.

[Dsen]

Hi. And what about 3D acceleration? Is it enabled?

[Justice]

3D acceleration is not enabled.

NB: I am apparently not subscribed to this ticket by default. This is counter-intuitive! I cannot figure out how to add myself as a CC while the ticket is in the "new" state.

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.