5 Replies Latest reply: Nov 8, 2012 5:34 PM by BDAqua
morris.tiny Level 1 Level 1 (0 points)

after sitting idle for a few minutes and i began to use my mac again, when i move the mouse i see a trail on my display all over the screen. what causes this? it's as if i'm using some type of paint program.

Mac mini, Mac OS X (10.7)
  • BDAqua Level 10 Level 10 (120,910 points)

    Hi Morris, a well known problem methiinks...



    Move the mouse or trackpad cursor over the center area of the login window so you can see the user icons. Click on the icon of the user that you would like to login as, type in the user's password, and press Return.

    If the login window is configured to show only the name and password fields, type in the user's name and password into the fields, and press Return (even if you cannot see the rest of the login window).

    Additional Information

    This issue will not occur if the display is not sleeping when the account is logged out. Use the steps below to confirm that the account is not configured to log out automatically while the display is sleeping:

    1. Open System Preferences > Security & Privacy > General.  Click the padlock to unlock the preference pane and enter your admin password. Click the Advanced button at the bottom, then see if the option "Log out after N minutes of inactivity" (where N is the number of minutes) is enabled.
    2. Open System Preferences > Energy Saver and configure Display Sleep to occur after the account is logged out, by dragging the slider to a number of minutes that is greater than N was set to in the previous step.

    Important: If automatic log out is not needed, disable "Log out after Nminutes of inactivity" in System Preferences > Security & Privacy > General. This will also prevent the issue.



  • morris.tiny Level 1 Level 1 (0 points)

    thank you very much.

  • BDAqua Level 10 Level 10 (120,910 points)

    You're welcome, is your problem solved now?

  • morris.tiny Level 1 Level 1 (0 points)

    Oh sorry it is. how can I watch flash based videos in safari or firefox without installing adobe flash?

  • BDAqua Level 10 Level 10 (120,910 points)

    Morris, see if Flash is disabled...


    If you need to re-enable an out-of-date version of Flash Player, you can do the following:

        1.    Navigate to the /Library/Internet Plug-Ins (Disabled) folder.

        2.    Drag "Flash Player.plugin" into /Library/Internet Plug-Ins.

        3.    If the browser is running, quit and restart it.