michael wrote:parn wrote:michael wrote:
Which window manager are you using?
I am using openbox without any DE. Just openbox and xcompmgr; which I have switched off while trying to troubleshoot.
I did a quick test by starting openbox ("openbox --replace") on my Ubuntu 14.10 host with two screens (laptop built-in and external) and starting a dual monitor Ubuntu 14.04 guest with Additions - admittedly development code, not 4.3.16. I did not observe any problems except for the mouse position being wrongly reported (known problem, known cause, but sadly the fix is not quite obvious. I presume this is not what you are seeing...?)
Can you think of any reasons I might not be seeing what you are?
Attached is a screenshot of what I am seeing after I manage to escape from fullscreen mode. It seems that a region of my screen is not being updated and it cannot be updated. The screen is not being updated in fullscreen mode as well. It is as if a region of my screen has been blocked off.
When I then press HOST+DELETE after focusing the VM, the Preview Panel in the VM correctly shows the blue windows option screen. Which means, Virtual Box is actually working because the Preview Panel reflects that. Also, after more testing, The mouse cursor bug you mentioned too has been observed at the edges of the VM where the GUI is not blocked.
Since I am experiencing this only in 4.3.16, I think it should be related to the X11 native full-screen multi-screen mapping API.
Running Xorg 1.16 + xf86-video-ati 1:7.4.0-3 on a Radeon Mobility HD3450