virtualbox.org

Not a huge issue but I've noticed when I launch a Windows 7 or 8.1 guest then shut it down, their wallpaper shows up in my Ubuntu 14.04 guest while it boots along with some pixelated garbage. It's fine once it gets to the desktop.

edit: VB 4.3.8. how strange, I just noticed after rebooting Ubuntu 14.04 instead of the wallpaper from Windows 8.1 I got part of the Map image I had open in 8.1.

Have you tried to restart the guest (from guest's Reboot)? I get garbage like this one below from this discussion. Supposedly it's been worked on...

Yes, when I said I rebooted the guest I meant from inside the guest. Mine only appears for a brief moment but from looking at the link you posted it appears to be a frame buffer issue. 4.3.8 certainly seems to have a number of issues, the Mac version anyway.

edit: after booting Ubuntu once, seeing the wallpaper, rebooting the guest and seeing the map, then rebooting it once again it was fine with no garbage or remnants of Windows. However, I suspect if I shutdown Ubuntu, launch Windows, shut it down and then boot Ubuntu it will happen again.

for what it's worth, this only seems to be an Ubuntu 14.04 with Unity issue. I shutdown Ubuntu, booted Xubuntu 14.04, shutdown Xubuntu, booted Ubuntu again and I still saw the map image from Windows 8.1 lol. beats me. If I boot Ubuntu, then restart it twice the problem goes away until the next time.

I think this is a OSX 10.9.2 issue perhaps. My understanding is Mavericks saves info to memory so if you launch an application again it will boot faster. It doesn't release the memory until it is needed. I have 32GBs of ram so I rarely need to release memory. Perhaps that's why I am getting screens from Windows guests. Just for kicks I had shutdown Ubuntu and then booted it again. This time I got the previous Ubuntu screen with the restart/shutdown menu.

No, I don't believe it's an OS type of issue. You see, first of all, I'm running 10.6.8. Second, I bet that if you take out 3D you will not see the issue. This is GPU and VRAM related. Try it out...

socratis wrote:No, I don't believe it's an OS type of issue. You see, first of all, I'm running 10.6.8. Second, I bet that if you take out 3D you will not see the issue. This is GPU and VRAM related. Try it out...

turning off 3D did make the problem go away but I have 3D enabled in every guest I have. The issue doesn't occur in anything except Ubuntu guests with Unity. For me anyway.

I just noticed "Take Screenshot" from the VB menu works with Unity with 3D enabled. I don't know how many versions ago that happened but it's nice that it does. Screenshots do not work inside the guest. I wonder if whatever was done to VB to get screenshots to work has something to do with the graphics glitch that occurs as Ubuntu with Unity boots up?