frodefromstavanger
Level 1 (0 points)

Q: Keyboard lag and problems

My wireless keyboard sometimes lags with the letters and numbers, and when I press signs (comma, space, volume up/down, etc.) it lags and then puts out several in a row instead of just one. I have to restart to get rid of the problem, burt it returns on a daily basis. I have tried to toggle the "slow keys" option on and off, as suggested in another post, but it doesn't help. I have no problems with the wireless mouse and trackpad. I run OS X El Capitan 10.11.2 on a late 2012 iMac (2,9 GHz Intel Core i5, 8 GB 1600 MHz DDR3). All hardware is original and came with the iMac.

OS X El Capitan (10.11.2)

Posted on Jan 9, 2016 6:16 AM

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frodefromstavanger

Q: Keyboard lag and problems

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  • Helpful answers

  • by joe_7399,

    joe_7399 joe_7399 Jan 10, 2016 1:54 PM in response to frodefromstavanger
    Community Specialists
    Jan 10, 2016 1:54 PM in response to frodefromstavanger

    Hello frodefromstavanger,

     

    Thanks for using the Apple Support Communities!

     

    I understand that your Apple wireless keyboard sometimes doesn’t respond as you would expect. To begin troubleshooting this situation, there are a couple of different sections I would like you to work through from the following article. 

     

    Your mouse or keyboard intermittently stops responding

    Follow these steps if your mouse or keyboard sometimes stops responding temporarily. 

    Click or press a key

    • Click the mouse or trackpad or press a key on the keyboard to reconnect the device to the computer. It may take a moment for the device to respond.

    Check for signal interference

    • Wireless networks that operate on 2.4GHz may cause interference. Move cordless phone base stations, microwave ovens, and other 2.4GHz electrical devices away from your Mac if you suspect interference.
    • Keep wireless devices within 10 meters (approximately 30 feet) of your Mac.
    • Avoid putting metal objects between your wireless device and your Mac.

     

    Your keyboard has one or more keys that don't respond

    Use the Keyboard Viewer to test whether the keyboard keys are responding correctly when they are pressed.

    1. Choose System Preferences from the Apple menu, then select Language & Text.
    2. Select Input Sources.
    3. Select the Keyboard & Character Viewer checkbox.
    4. Enable the input source for the keyboard layout you're testing by selecting the checkbox next to it.
    5. Make sure that "Show Input menu in menu bar" is enabled.
    6. Choose Show Keyboard Viewer from the Input menu in the menu bar.  
    7. The Keyboard Viewer showing the keyboard layout appears on your display.
    8. Type the key on the keyboard that doesn’t respond and see if the corresponding key highlights on the Keyboard Viewer. If it does, that key is functioning correctly.

    Notes:

    • If the mouse keys feature in the Universal Access System Preferences pane is enabled, many of the keyboard keys may not respond as expected.
    • If issues persist, try starting up your Mac in single-user mode to see whether a software issue is causing the issue.

     

    If your Apple wireless mouse, keyboard, or trackpad aren't working as expected - Apple Support

     

    Cheers!

  • by frodefromstavanger,

    frodefromstavanger frodefromstavanger Jan 11, 2016 12:58 PM in response to joe_7399
    Level 1 (0 points)
    Jan 11, 2016 12:58 PM in response to joe_7399

    Thanks for your response joe!

     

    I have no signal interference, and have made no changes in the room my iMac is placed in. So i do not think that signal interference is causing the problem.

     

    I have checked that the keyboard keys respond correctly. But I think the "how to"-explanation above is old, because the names are not the same ("Language & text" is now called "Language & region", and the keys do not highlight).

     

    The problems are never there when I start up the iMac, but they usually appear after a few hours. That makes me think that this problem may be related to tied up memory. A restart fixes the problem, but it then returns usually the next day. I will try to start up in single-user mode to see if it makes any differenceI.