usb mouse not working after sleep

Question

Level 1

8 points

usb mouse not working after sleep

I had this problem occasionally, but yesterday this problem occurred three times. When I tried to wake up the iMac from sleep mode, the usb mouse no longer worked (even when I tried connecting to multiple USB ports on the back of the monitor. To recover, I had to force the desktop to reset by doing a long power key press. I don't want to do a hard reset to recover because this is not good for the iMac. Any advice would be greatly appreciated. Thanks in advance.

I am running OS X El Capitan (version 10.11.3).

iMac with Retina 5K display, OS X Yosemite (10.10.5)

Posted on Jan 31, 2016 3:28 AM

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Answer 1

sterling r

Community Specialist

Feb 1, 2016 9:28 AM in response to shorty1234

Howdy shorty1234,

It sounds like your USB mouse isn't working when you wake your computer from sleep for some reason. I would recommend you use the troubleshooting in the following article for USB related issues in El Capitan:

OS X El Capitan: If a USB device isn’t working

Thank you for using Apple Support Communities.

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Answer 2

Old Toad

Level 10

215,760 points

Feb 1, 2016 3:41 PM in response to shorty1234

Try reseting the SMC and PRAM:

Reset the SMC

Resetting the System Management Controller (SMC) on your Mac - Apple Support

To reset the SMC on Intel-based Mac Pro, iMac, and Mac mini computers, as well as Xserve:

Shut down the computer.

Unplug the power cord.

Wait fifteen seconds.

Attach the power cord.

Wait five seconds, then press the power button to turn on the computer.

Reset the NVRAM/PRAM

Boot with these keys held down:

Option + Command + P + R

Wait for the 2nd chime and release the keys.

How to Reset NVRAM on your Mac - Apple Support

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Answer 3

shorty1234 Author

Level 1

8 points

Feb 1, 2016 1:57 PM in response to sterling r

Thanks for your reply, but I think that the problem is something else. I only have a problem with the keyboard/mouse not responding when the desktop is asleep overnight. It happens even if all accounts are logged out. The Apple Help Desk suggested that I reinstall the operating system.

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Answer 4

shorty1234 Author

Level 1

8 points

Feb 7, 2016 3:02 PM in response to Old Toad

I ended up reinstalling my o/s. That solved the problem. Thanks for all of the advice.

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