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Old 09-20-2010, 08:06 AM   #1
blnl
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Question Screen artifacts when running VirtualBox


When the VirtualBox guest OS (WinXP) is started, the other desktop screens behave strangely.
It is difficult to describe how the issue looks like. Therefore, I have made a screenshot.


Has anyone seen something like this before?
Does anyone know why is this happening and how to fix it?
 
Old 09-28-2010, 01:29 AM   #2
Ramurd
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looks like your videocard cannot keep up or does not get it's data provided fast enough. We don't really get enough information:
- how busy does your host get?
- how much memory do you have free on the host?
- is there (any) waitio involved?
- how high is the cpu-load on the host machine? (I think virtualbox video is rendered on the cpu rather than on the gpu)
- ...
 
Old 09-30-2010, 01:20 AM   #3
blnl
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Quote:
Originally Posted by Ramurd View Post
looks like your videocard cannot keep up or does not get it's data provided fast enough. We don't really get enough information:
- how busy does your host get?
- how much memory do you have free on the host?
- is there (any) waitio involved?
- how high is the cpu-load on the host machine? (I think virtualbox video is rendered on the cpu rather than on the gpu)
- ...
You are right it was the memory issue!

I remembered that about a few weeks ago due to some memory problems I had to remove 1GB faulty memory from my machine. Still, I forgot to change the base memory allocation in the VirtulaBox settings (stupid mistake). As a result 760MB was allocated for the VirtualBox on a 1GM machine.

After reducing the VirtualBox base memory to 440MB, the host desktop behaves normally again.
So I believe this issue is solved now.
 
  


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