Windows flickers in 'Single Window' mode

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DFoxgrov

Bit poster
I have recently seen two instances of Windows flickering badly in Parallels for Mac 3.0. In both cases, the computers have been iMacs (one from 2006 with a Core Duo chip, the other from 2007, with a Core 2 Duo chip).

Here is the way another user has described the issue - see post at:
<http://forums.parallels.com/showthread.php?p=91483#post91483>

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I've installed Windows XP Pro inside Parallels, and inside the Virtual Machine I'm getting pretty bad display quality. For example when I mouse over a window in XP, often it flickers on and off. Or when I close a window, often it flickers back and forth in and out for a number of minutes before disappearing entirely.

I've played with a couple of settings in Parallels. For example setting up specific custom resolutions, and matching those inside XP. I've also increased the amount of video memory assigned by Parallels to the virtual machine. The issue has been persistent and invariant under these changes.

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I tried cloning the Core 2 Duo iMac to a MacBook Pro, and the problem does NOT happen on the portable.

I have replaced the RAM in the Core 2 Duo iMac and the problem continues with the new RAM.

I have followed the procedures for increasing the virtual RAM in Windows. It didn't help.

This is happening with Parallels Desktop 3.0 for Mac, build 5582.

The problem seems to go away if the systems are switched to Coherence.

Thanks for any help.
 
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When you sudo you have to authenticate also, in Finder, just select all the files cited using the the command key and you'll only have to authenticate once.

And if you're going to do the script don't forget that the .kexts are folders, or at least update the article.

Also, commands that involve 'sudo rm -rf' shouldn't be copy pasted, a bad selection can be too dangerous.
 
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I usually get it while running Forte Agent in coherence mode.

The flicker doesn't seem to be anything the program knows about, but is a flip back and forth between two images. I actually can work if I can guess which of the two images is the current one. But I quit out and restart Parallels instead. Every time except once that did the trick.
 
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I have the flicker and I run in coherence mode.

I have had this running Forte Agent. The flicker seems to be between the "real" screen and the previous image. I believe the swap only swaps the image, and nothing really changes behind the scenes. I close down my apps, close down Parallels, and restart. Only once has this failed to clear the problem.
 
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I started to see this flicker every once in a while on my MacBook Pro. It started just a couple of days ago. I've been running PD 5600 on 10.5.3 since the update came out and nothing like this has happened before. Could it be an issue with a Windows update? If this were happening on a windows PC, I'd suspect maybe corrupted drivers or something like that.
 
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In my case it happened right after I installed OS X 10.5.3 update. Before the update, Windows XP VM did not have any flicker problem.
It is a big hassle to me to remove OS update and test my case.
So I am awaiting your solution.
 
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fast screen flickering

does the update fix the problem?
we are running parallels on a new imac 24" with winxp pro. when i start quickbooks anything within the vm becomes almost impossible to use. rapid flickering. this just started occurring in the past week or so and the accountant is having to work in bootcamp (obviously working fine) in order to get her work done.
tia
 
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