My Mac don't go sleeping since Lion Update

I've had the same...

Listed by owning process:

pid 21: [0x0000012c00000015] PreventSystemSleep named: "org.cups.cupsd"

Deleted an old printer and suddenly there's nothing preventing sleeping.

that was it!! for me it had to do with "Printer Sharing"

I used the "pmset -g assertions" and noticed there was 2 processes, one of them was cups (related to printing)

I toggled "Printer Sharing" off and our iMac is able to go to sleep - hallelujah! this issue was driving me nuts as rebooting the machine didn't make a difference - so it has something to do with the way the printer sharing settings carried over from 10.6.x

I've toggled Printer Sharing back on and another "pmset -g assertions" doesn't show any processes and sure enough it's able to go to sleep.

I'll see how long this lasts and at least know if it does happen again, that this is likely to be the culrpit.

Hi,

Processing # pmset -g assertions and killing a PID which prevented from sleep when my computer was plug-ined helped.

J

Friends - I made a seperate post about this issue and then found this forum

I have a MBP (SSD) that wouldn't wake up after sleeping if MagSafe was plugged in

This solution worked for me -

I went into SYSTEM PREFS and noticed that I had PRINTER SHARING active on an HP printer that I never use - in addition, I had 3 HP printers installed, but I never use any of them

I deleted the three HP Printers, turned PRINTER SHARING off on all printers and also went into SECURITY SETTINGS and DISABLED INFRARED REMOTE

Lastly, I also made sure that FILE SHARING and all other types of NETWORK SHARING were off, which they were

Fingers crossed, I hope it stays this way!

Hi,

Aparently the "sleeping" problem is usually caused by "active" printer or its drivers. This suggest a lack of full compatibility between Mac OS X and printers drivers. In my case the problem was associated with Brother printer.

J

jbuczny -

Again, my solution could be premature, but the one BROTHER DRIVER I have doesn't seem to be causing the problem - deleting my HP PRINTER profiles definitely made a difference

Anyways - many solutions to a similar problem - lol

My problem was my iMac not wanting to sleep. I had just loaded Lion and also the October Apple update of all printer drivers. When Sleep was clicked the machine shut down for about 10 seconds , then restarted. If I just left the machine ON, it would sleep per the settings under Preferences-Energy Saving, but then awake again after about 15 minutes. Finally I shut down the iMac, the printer and the scanner. Disconnected the usb cables. Restarted the iMac. Plugged in the usb cables. Turned the printer and scanner ON. Made sure there was not a que of items to be printed. After this, the iMac went to sleep properly.

Been one week now and everything is still awesome - the solution above worked well for me

Viv -

No need to touch your library folder

Open SYSTEM PREFERENCES and click on PRINT & SCAN - your printers will be on the left-hand side - just delete whatever printers you're not using - also, click on SHARING PREFERENCES as that will be on the right-hand side, and I would recommend turning off any sharing that you're not using

BTW - disabling the remote (the other thing I did) could also solve the problem outright - I just deleted my HP printers because I don't use them anymore

Anyways - hope that answers your question 🙂

I did not fuss with anything in the system library etc. (I am too much a novice) but, I would think that because I downloaded an Apple printer update dated Oct 27, their download would have done some houskeeping. See Apple downloads.

Ditto on the print queue problem here. Cancelled the a job left in the queue to a shared printer and now my MacBook Pro is sleeping as well as ever.

Thanks all.

Unfortunately, my MBP is still not falling asleep. Forcing it by shutting the lid or through the Apple menu works, but my Energy Saver prefs are not acknowledged, either plugged in or on battery.

pmset -g assertions shows this:

ChargeInhibit 0

PreventUserIdleDisplaySleep 0

PreventUserIdleSystemSleep 0

NoRealPowerSources_debug 0

CPUBoundAssertion 0

EnableIdleSleep 1

PreventSystemSleep 0

DisableInflow 0

DisableLowPowerBatteryWarnings 0

ExternalMedia 0

And I have nothing in my printer queues. I have no File Sharing or any other preferences turned on that have been mentioned here. This has been an issue since I clean installed Lion a few months ago.

any ideas?

Juergens-MacBook-Air:~Juergen$ pmset -g assertions

30.11.11 19:08:31 MEZ

Assertion statussystem-wide:

ChargeInhibit 0

PreventUserIdleDisplaySleep 0

PreventUserIdleSystemSleep 0

NoRealPowerSources_debug 0

CPUBoundAssertion 0

EnableIdleSleep 1

PreventSystemSleep 0

DisableInflow 0

DisableLowPowerBatteryWarnings 0

ExternalMedia 0

Kernel Assertions:0x0008

* Kernel AssertionID = 500

Created At= 01.01.70 01:03:48 MEZ

Modified At= 01.01.70 01:00:00 MEZ

Owner ID =0xffffff800b896000

Level = 0

AssertionsSet = None (4)

* Kernel AssertionID = 501

Created At= 01.01.70 01:06:12 MEZ

Modified At= 01.01.70 01:00:00 MEZ

Owner ID =0xffffff800b8f9000

Level = 0

AssertionsSet = None (4)

* Kernel AssertionID = 502

Created At= 01.01.70 01:06:25 MEZ

Modified At= 30.11.11 19:19:35 MEZ

Owner ID =0xffffff800b8f4600

Level = 0

AssertionsSet = None (32)

* Kernel AssertionID = 503

Created At= 30.11.11 19:17:07 MEZ

Modified At= 01.01.70 01:00:00 MEZ

Owner ID =0xffffff800d063000

Level = 255

AssertionsSet = None (8)