Mac not sleeping

[chiefsub68]

Hi

My nine-year-old (2009) iMac won't go to sleep. I've run pmset -g assertions[space] in terminal and got the message below. Can anyone who knows the code enlighten me as to what to look for, please?

Will

pmset -g assertions

2018-06-04 12:05:05 +0100

Assertion status system-wide:

BackgroundTask 0

ApplePushServiceTask 0

UserIsActive 0

PreventUserIdleDisplaySleep 0

PreventSystemSleep 0

ExternalMedia 0

PreventUserIdleSystemSleep 1

NetworkClientActive 0

Listed by owning process:

pid 174(coreaudiod): [0x00002269000101ca] 00:06:14 PreventUserIdleSystemSleep named: "com.apple.audio.AppleHDAEngineOutput:8,0,1,2:0.context.preventuseridlesleep"

Created for PID: 375.

Kernel Assertions: 0x104=USB,MAGICWAKE

id=500 level=255 0x4=USB mod=01/01/1970, 01:00 description=com.apple.usb.externaldevice.26400000 owner=Keyboard Hub

id=501 level=255 0x4=USB mod=01/01/1970, 01:00 description=com.apple.usb.externaldevice.26410000 owner=Kensington Eagle Trackball

id=502 level=255 0x4=USB mod=01/01/1970, 01:00 description=com.apple.usb.externaldevice.26430000 owner=Microsoft 5-Button Mouse with IntelliEye(TM)

id=503 level=255 0x100=MAGICWAKE mod=01/01/1970, 01:00 description=en0 owner=en0

Idle sleep preventers: IODisplayWrangler

[doublepost=1528112757][/doublepost]The com.apple.auid.AppleHDAEngineOutput isn't showing in activity monitor.

 

[satcomer]

It’s USB device that has something on it constantly running! Unplugging the USB and then try to sleep to see if that helps. This way you can trace down the problem!