Mountain Lion and Mission Control

I upgraded to Mountain Lion. Since then Mission control freezes on a daily basis and will only reset by doing a computer restart. Anyone else have this problem? Any suggestions?

This happens to me too - I think the  problem is somehow related to the screen saver and system sleep. There's an easy remedy:
Go to your System Preferences --> Desktop and Screen Saver. Click on the "Screen Saver" section, and click "Hot Corners". Set one of your hot corners to "Start Screen Saver".
Next time Mission Control fails, just point your mouse to the "Start Screen Saver" hot corner, and wait for the screen saver to start up. When you start working again, Mission Control  will be back to normal.
It doesn't fix the problem, but it's whole lot faster than restarting or logging out each time it happens.

Similar Messages

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    Several people have posted, confused by how App Expose works. I hope to clarify the function of App Expose and Mission Control.
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    To test App Expose in Lion, open two (or more) separate windows in Safari (or any application). Three-finger swipe down on your trackpad and App Expose will reveal your two (or more) open Safari windows.
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    Mission Control ended years of divergent attempts to manage windows and widgets, consolidating Expose, Dashboard, and Spaces into a new Mac interface.

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    back in the days of leopard, the dashboard widgets would come to the foreground but you could still see what you were working on.  Now I've updated to mountain lion and the work is no longer visible when I activate dashboard.  Can I change that back? 

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  • When i'm downloading mountain lion and it gets 100% says that an error has occurred

    When i'm downloading mountain lion and it gets 100% says that an error has occurred

    Adrian Willis wrote:
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    Mac App Store Support
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    A bit more info for those of you reading this.... the problem seemed to be in iTunes. For each connected device , if I clicked on the Photo option I could no longer select the second radio button for limiting the photos by Events, Albums, etc.  It was an all or nothing deal. But selecting all would cause the error.
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  • If I buy a mac with mountain lion and then upgrade to mavericks wil I get iWork for free, If I buy a mac with mountain lion and then upgrade to mavericks wil I get iWork for free

    If I buy a mac with mountain lion and then upgrade to mavericks will I get iWork for free.

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  • I've upgraded to mountain lion and now cannot use microsoft office--what happened?

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                             [click on image to enlarge]
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  • Can I use Unix symbolic links between Mountain Lion and Snow Leopard Mail folders?

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  • Mountain Lion and Lion very slow on Macbook 13' 2010 Middle

    The problem is the Mountain Lion and Lion very very slow, but Snow Leopard was fast.
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    Overall, the system response is very slow, and lagging.
    I tried to clean dinstall several times, but this didn't help me.
    I know that the new system is slower on older machines, but it would not be so necessary. This Machine is good machine, and i think this is enought for Mountain Lion. Will Apple fix this slow issue soon (maybe 10.8.3), or stay in this state?
    At current state of the system is unusable due to the slowness.
    Or is it a non official solution to fix this?
    Thanks for your answers.

    How much RAM do you have installed? 4 GB RAM is generally recommended as a reasonable minimum since kernel_task (part of system) consumes up to 1 GB; my browser consumes another 500 MB or so. So, if you like to multi-task and have several things open, then you will need to increase your RAM. This problem will not be fixed; I sent in a bug report and the reply was that this is how it is intended - 64 bit addressing consumes far more resources than 32 bit (Snow Leopard).
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  • Is there a conflict with Mountain Lion and ATT air card?

    I have an ATT USBconnect Momentum 4G air card. Ever since I installed Mountain Lion I am getting an error message that says that something is trying to modify the configuration. Is there a conflict with Mountain Lion and the ATT 4G air card? If so, is there something I can do about it? Thanks!

    Please follow these directions to delete the Mail "sandbox" folder.
    Back up all data.
    Triple-click the line below to select it:
    ~/Library/Containers/com.apple.mail
    Right-click or control-click the highlighted line and select
    Services ▹ Reveal
    from the contextual menu.* A Finder window should open with a folder named "com.apple.mail" selected. If it does, move the selected folder — not just its contents — to the Desktop. Leave the Finder window open for now.
    Quit and relaunch Mail, and test. If the problem is resolved, you may have to recreate some of your Mail settings. You can then delete the folder you moved and close the Finder window. If you still have the problem, quit Mail again and put the folder back where it was, overwriting the one that may have been created in its place. Post your results.
    Caution: If you change any of the contents of the sandbox, but leave the folder itself in place, Mail may crash or not launch at all. Deleting the whole sandbox will cause it to be rebuilt automatically.
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  • Upgraded to Mountain Lion and CS3, I am no longer able to access the correct dialog box for fine printing with Epson Stylus Photo 1400.

    I have recently upgraded my Mac OS to Mountain Lion, and am using Photoshop CS3 together with Lightroom 5. To my absolute horror, in either Adobe program I am no longer able to access the dialog box which allows me to choose paper type, size, and print quality when attempting to print on my Epson Stylus Photo 1400. An excruciating hour on the phone with largely unintelligible folks at Epson seemed to prove the problem lies with Adobe instead of Epson. I'd greatly appreciate whatever advice might be forthcoming from the Community.

    Well, this seemed to work.. can't believe it! After a year of messing with this!
    from Stevejones5
    "I found a way around this problem. GO to HD/Library/Printers/Epson/InkjetPrinter/ICCProfiles and you will find a file labeled Pro38.profiles. This is a package file. Control click on it and reveal contents. Then you can copy all the profiles and paste them into your Colorsync folder either in the HD/Library folder or your own Home folder/Library. Then the profiles will show up in Photoshop and Lightroom."
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  • Lion Frustrations: Mission Control

    Okay, don't get me wrong, I love Lion, however Mission control is driving me crazy. It is mainly because I cannot rearrange desktops (easily at least). I have apps I have opened an put in full screen and it would be so much more user friendly if I could rearrange desktops.
    Another frustration is that Mission Control does not play nicely with multiple displays. It would be nice if each desktop would display on a separate display. So desktop 1 would display on my first screen and desktop 2 would be on my second screen, then when I do a three finger swipe it would then switch to displaying desktops 2 and 3. This way makes so much more sense. That would also resolve the issue of full screen apps leaving the second display blank.
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    Yeah this is not normal at all...I'm facing the same problem....*** I use this computer to work not to brush tooth to turtles....this is really not normal please fix asap...is impossible to work like this....I miss spaces...

  • Multiple Displays, Fullscreen Apps, and Mission Control

    I love Lion, however one thing that has always bothered me was the fact that it doesn't play nicely with multiple displays. Full screen apps do not allow the other display(s) to be available for use with that app is in fullscreen mode. And Mission Control doesnt behave as expected with multiple displays.
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    I would also try posting here:
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  • I downloaded mountain lion and then the new office suite (word, ppt, excel) but now when I try to display one of my ppt's it says 'ppt cannot open the file...the file may be corrupt, in use, not a type recognized by ppt etc.." how can I fix it?? HELP

    I downloaded mountain lion and then the new office suite (word, ppt, excel) but now when I try to display one of my ppt's it says 'ppt cannot open the file...the file may be corrupt, in use, not a type recognized by ppt etc.." how can I fix it?? HELP

    Did you try to open teh fle by double-clicking its icon? If the file was made with an older version of Office, you may get that message. Try opeing PP and, from its "File" menu, see if you can open the ppt. I've foundthat often gets around that message and then yo ucan save the file from the newer version.
    If that doesn't work, consider asking in the Microsoft Office: Mac forums here:
    Office for Mac forums
    PowerPoint is not an Apple product and it seems a lot of people around here avoid Office.

  • Can I purchase Mountain Lion and make a flash drive bootable? I do not want to install it on my Macbook Pro. I have Snow Leopard on my Macbook Pro now, and due to my hard drive needing repair I need to boot off of another source, like my flash drive.

    Can I purchase Mountain Lion and make a flash drive bootable? I do not want to install it on my Macbook Pro. I have Snow Leopard on my Macbook Pro now, and due to my hard drive needing repair, I need to boot off of another source, like my flash drive. I am in Paris and my Snow Leopard DVD is in Texas.

    Mac OS X has a built-in disk diagnostic and repair program called fsck or file system consistency check. Here’s how to verify and repair your startup disk with fsck.  As soon as you hear the startup tone, press and hold Command-S on the keyboard. Keep holding down those keys until you see a black screen with white lettering. This is called “booting into Single User Mode.”  As the Mac boots in this mode, the screen reports each step of the process. The line should end in root#.  Right after the root# prompt, enter the following: /sbin/fsck -fy
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