Blank or White windows / dialogs in Coherence

A

AlistairR

Bit poster
Hi, I have a Mac OS X 10.6.7 MBP running Parallels 6 clean install. I have dual monitors going most of the time and I think it's related to that, but at random occasions, usually once a day I get all my applications turning white. I can't see anything in them at all, the space that the window occupies is completely white. If I click where the top bar of the app is supposed to be, I can drag it around so I know that it hasn't crashed and if I switch out of Coherence, all the apps go back to normal in the Windows XP desktop. If I switch back to Coherence, some times the windows will still be white, some times they will be back to normal.

If I unplug my secondary (main) monitor and plug it in again, this usually resolves the issue. I have turned off all power saving features and the machine isn't being left idle, it can be in active use. The same thing happens with both of my two monitors as well so I don't believe it is related to the monitor. Can anyone help?

Thanks,

A.
 
I have had exactly the same problem. I use an external monitor with my MacBook Air, and I get blank windows. I haven't yet pinpointed the circumstances that trigger this in Coherence, but it is certainly a bug in Parallels 6.0.11994.
 
This is happening to me as well...if I turn coherence off the VM (Windows 7) works perfectly, but when I switch coherence on all the dialogs, windows, etc. are white squares.

Only solution is to quit parallels and restart the VM.
 
Same here...

I have dual monitors and only see all white windows in coherence. When I exit coherence everything is fine. This is the first time that it's happened to me and I googled the symptoms only to find this thread.

OSX 10.6.7 MBP 2010 Dual Monitors
 
I just noticed this only happens to me when in coherence after the computer has been in Sleep mode. After a first boot it shows ok...then I sleep the computer when I open the windows again: white dialogs and windows.

Hope to see this fixed soon!
 
I have the exact same problem - It happens after I unplug my Macbook from the Cinema Display. Switching between Coherence and Windows Mode does not fix it.

Has Parallels acknowledged this issue? This is a definite bug that needs to be fixed...
 
I'm still having this problem and still haven't heard of a workaround/fix or acknowledgment of the problem by the Parallels team...anyone found a solution? it happens after unpolugging an external display or coming back from sleep!
 
Blank Win 7 Apps in Coherence mode after sleep

Is there a fix for this or a response from Parallels anywhere? This is a problem and we do not even know if it works. I am seeing this same issue discussed on other forums as well but just more and more people getting frustrated and no communication.

Anyone out there with a solution or at least comments from Parallels?
 
I have the same issue bu it only happens to me when in coherence after the computer has been in Sleep mode.
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I am still having this issue when I unplug my external monitor from my Macbook Pro as well. Latest version of Parallels and osx 10.6.8.
 
Ok, so I filed a support request with the Parallels team. They were very fast and diligent with their response, acknowledging the issue and stating they are working on a fix.

Here's the response (with their permission):

Problem Subject: Blank or White windows / dialogs in Coherence after unplugging from ext. display or returning from sleep

Blank or White windows / dialogs in Coherence after unplugging from ext. display or returning from sleep.

Whenever I'm in coherence mode and disconnect my MBPro from an external display or come back from sleep, I get all the Windows windows blanked/as white boxes. Please take a look at the screenshots.

The issue is well documented here:

http://forum.parallels.com/showthread.php?t=109263

Please let me know if this is a know issue or if there's any workaround, as the only way to keep working under coherence is to restart parallels desktop.

Thank you!
Click to expand...
Hello Juan,

Thank you for contacting Parallels Technical Support.

As I understand that , You are getting blank/white screen after coming back from sleep mode/after unplugging dual monitor.

Please suspend or shut sown the virtual machine before going to sleep mode because it you go to sleep mode leaving virtual machine running then it that case you are forcing your virtual machine to go in sleep mode.

About the unplugging the dual monitor from MAC Book pro, it is a known issue and parallels is searching for the fix for it.

We will be keep you updated once we get the fix.

Please feel free to contact us if issue persists.

Awaiting your response.

Thanks'

--

Vikki Kumar
Technical Support Engineer
Parallels
Click to expand...
 
I think I have the same issue, although I haven't had it with full apps being white but only menus. Attached is a pic of Office 2007 and SecureCRT applications showing this issue, although it happens in almost every application, including Windows Explorer.

It only happens in Coherence mode. It doesn't matter if I have a second screen attached to my MacBook Pro or not, nor if it is after a sleep or from a fresh boot and launch of Parallels/Windows 7 VM. (as others have mentioned in this thread)

It does not happen every time I select a menu but quite often. When it happens, if I click the menu button again to hide the menu then click again, it will appear properly. I can also move the mouse down the 'menu' and it will draw it properly.

I've also been able to reproduce it almost every time by clicking on a menu then off the menu button (just next to it in the empty menu bar space) and then immediately on the menu again. More than not, this will cause the menu to go white. I do the same to get it from white to the proper menu.

Parallels v7.0.15055
Mac OS X 10.7.3
MacBook Pro 15" (Late 2011)
16GB RAM (3GB allocated to VM)
Tried it with 256MB, 512MB, and 1GB of Video RAM allocated in the VM configuration.
Windows 7 Professional x64 SP1

I'm getting pretty good at opening support request tickets so if you need me to submit more info, I'll be happy to do it.
 

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I just got Parallels 7 for Mac today and have the same issue. When I close the Macbook Air and come back to it later, the application (JMP) I was using in Coherence mode flickers black. Then, the top menus (File, View,etc) don't work. They just have borders around them but no content after clicking.

I'm running Lion 10.7.4.
 
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