Mac mini does not stay in sleep mode

Another sleep issue here: Mac mini (late 2012) will not remain in sleep mode since updating to OSX 10.8.5, I had no problem with 10.8.4. System log seems to indicate that the USB controller is sending a wake signal (lists all USB contoller ports as possible source). I have reset the NVRAM to no effect. Any suggestions how to proceed. I am not ready to update to Mavericks yet, which may or may not solve problem. I would like to sort this out if possible in 10.8.5.

Look down towards the bottom of > Why your Mac might not sleep or stay in sleep mode
Are a keyboard and mouse connected and working correctly?
Do you have any other external USB or FireWire devices connected? Try removing or disconnecting them one by one, when not in use, taking care to dismount any that are storage devices before disconnecting them.

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Why will my Mac 8,1 intel desktop not stay in sleep mode for more than 5 seconds?
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Hello, most usually it's some USB device causing that, but...
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts (Users & Groups in later OSX versions)>Login Items window to see if it or something relevant is listed. Or an errant process eating up RAM.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons

TS3402 iMac with OS X 10.8.4 will not stay in sleep mode.

After installing latest OS updates, 10.8.4, we cannot get our iMac to stay in sleep mode. Energy saving settings have computer sleep and display sleep set to15 minutes, put hard disks to sleep when possible and allow power button to put to sleep are selected. Wake for network is not selected. Also allow bluetooth devices to wake computer is not selected. We are using Time Machine using a USB connected seagate disk, USB connected keyboard and bluetooth mouse. Sleep mode worked before applying latest OS update to 10.8.4 level, which was the only recent change. Now, if put to sleep, monitor goes black for a few seconds then back on. Appears that something that I haven't identified wakes it up.

The solution was found in another post. The suggestion made by marks33 says:
My computer would not stay in sleep mode either since update Mac OS 10.8.4 and I tried resetting the SMC.
Resetting SMC:
Shut down the computer
Unplug the power cord and ALL peripherals (mouse, keyboard + ethernet cable also)
Wait 20 seconds
Attach power cable and wait another 10 seconds
Press power button
Attach all other cables after desktop appears.
Try it if you haven't already. It cured the sleep issue on my iMac.

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Hi,
I have a Mac Book Pro and Mac Mini. I needed to reinstall my Mac Mini but lost the install disks. The install disks of the Macbook do not work (machine specific). So what I did was boot the Mac Mini in firewire target mode and installed OS X to it from the Macbook. Worked ok. Except for one thing: The Mac mini does not boot the fresh OS X installation. I get a blinking folder icon with a question mark on top of it.
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Well, see, the fact that it wouldn't let you boot from the MacBook install disks should have been your first clue to not try to do it. There's a reason it wouldn't let you. The MacBook install disks contain a version of the OS specific to the MacBook, in order to prevent people doing what you just tried to do (ie, installing the same copy of the OS on multiple machines).
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My computer has been acting weird lately. Shuts itself off, the mouse goes off in all angles, does not go into sleep mode sometimes and instead shows on a gray screen definitions of words in 3" letters! Do I have a virus?

My computer has been acting weird lately. Shuts itself off, the mouse goes off in all directions, does not go into sleep mode sometimes, instead shows a gray screen with word definitions in large 3" letters that continuosly flows across the screen. Do I have a virus?

Doesn't really sound like a virus.
See if the Disk is issuing any S.M.A.R.T errors in Disk Utility...
http://support.apple.com/kb/PH7029
How many of these you can answer...
Open Activity Monitor in Applications>Utilities, select All Processes & sort on CPU%, any indications there?
How much RAM & free space do you have also, click on the Memory & Disk Usage Tabs.
Open Console in Utilities & see if there are any clues or repeating messages when this happens.
In the Memory tab, are there a lot of Pageouts?

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The little house with a music note inside it that I see on the upper left corner of the iTunes 12.1 window on my MBP does not appear on iTunes 12.1 on the new Mac Mini. I have gone through all the iTunes preferences and can not find where I can turn on this feature. The new Mac Mini is on the local network and I can reach the internet successfully.
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Hello josfromkerkade. Please contact me so that I can get more details.
We'd like to understand which monitor you're using, how old it is, which Thunderbolt port you're using (tethered cable or TB port), & the version of firmware.
[email protected]
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To see if you are ready for 10.5, read:
https://discussions.apple.com/docs/DOC-2275
To see if you are ready for 10.6, read:
https://discussions.apple.com/docs/DOC-2455
To see if you are ready for 10.7, read:
https://discussions.apple.com/docs/DOC-2465

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See this Apple note: http://support.apple.com/kb/HT2622

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Try disconnecting any external devices, especially hard drives
and try rebooting.
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If you are running Lion, boot to the Recovery HD and run a
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If Snow Leopard, boot to the installl DVD and run Repair Disk.
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http://reviews.cnet.com/8301-13727_7-57345273-263/troubleshooting-the-boot-proce ss-for-intel-macs/?tag=txt;title
for future reference. It is a pretty good explanation of the
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It does not show up in disk utility, its only visible through systeminformation.
When you plug in the USB flash drive and then refresh systeminformation it becomes visible.
To remove it I shut down the computer because I cannot eject the USB device anywhere.
After starting up again when I have removed the flash drive it has gone from the systeminfo USB list.
By the way my USB mouse and keyboard are working fine, I also changed ports of these and they still keep on working so I don't think the USB ports are defect.
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DBG413 wrote:
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Mac mini does not stay in sleep mode

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