Sudden Display Sleep Mode

Question

Level 1

0 points

Sudden Display Sleep Mode

This is an issue that I've had for a few months now, I don't know exactly when it started.

Issue:

I will be on computer, doing whatever, and the display will randomly go to sleep. Rest of computer seems to be running fine (ie - audio from browser or itunes would continue playing) and then I click any key and it will turn back on.

I've posted a TON of logs over in MacRumors forum, in case you want to check them out: http://forums.macrumors.com/showthread.php?p=15627118&posted=1#post15627118

Most recent Log - This is EVERYTHING that happened in the log between two display blackouts The previous blackout time is the section of the log displayed in bold, so the display first when to sleep at 9:17am, and the next one at 9:23am. Hope someone can help!

2012-09-11 09:16:18 -0400 Google Chrome Helper[63841]: CGSLookupServerRootPort: Failed to look up the port for "com.apple.windowserver.active" (1100)

2012-09-11 09:17:39 -0400 WindowServer[81]: Created shield window 0x5026 for display 0x042803c0

2012-09-11 09:17:39 -0400 WindowServer[81]: device_generate_desktop_screenshot: authw 0x0(0), shield 0x0(0)

2012-09-11 09:17:39 -0400 WindowServer[81]: device_generate_lock_screen_screenshot: authw 0x0(0), shield 0x0(0)

2012-09-11 09:17:43 -0400 WindowServer[81]: handle_will_sleep_auth_and_shield_windows: no lock state data

2012-09-11 09:17:58 -0400 Dock[140]: no information back from LS about running process

2012-09-11 09:18:21 -0400 universalaccessd[63931]: CGSGetZoomParameters: Invalid connection

2012-09-11 09:18:21 -0400 universalaccessd[63931]: CGSSetZoomParameters: Invalid connection

2012-09-11 09:19:59 -0400 kernel[0]: nspace-handler-set-snapshot-time: 1347369601

2012-09-11 09:20:17 -0400 com.apple.mtmd[53]: stat on /Users/Phil/Library/Application Support/Google/Chrome/Default/History Index 2012-09-journal: No such file or directory

2012-09-11 09:20:23 -0400 coreservicesd[34]: SendFlattenedData, got error #268435460 (ipc/send) timed out from ::mach_msg(), sending notification kLSNotifyChildDeath to notificationID=7974

2012-09-11 09:20:37 -0400 Safari[64009]: CGContextClipToRect: invalid context 0x0

2012-09-11 09:23:22 -0400 WindowServer[81]: Created shield window 0x5068 for display 0x042803c0

2012-09-11 09:23:22 -0400 WindowServer[81]: device_generate_desktop_screenshot: authw 0x0(0), shield 0x0(0)

2012-09-11 09:23:22 -0400 WindowServer[81]: device_generate_lock_screen_screenshot: authw 0x0(0), shield 0x0(0)

2012-09-11 09:23:41 -0400 WindowServer[81]: handle_will_sleep_auth_and_shield_windows: no lock state data

MacBook Pro (Retina, Mid 2012), OS X Mountain Lion (10.8.1)

Posted on Sep 11, 2012 6:57 AM

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Answer 1

Sep 21, 2012 6:34 AM in response to Fire_Bird

have had a similar problem with 27 inch iMac. Took it into apple store but the problem would not occur when they had it. Reformatted the hard drive and did clean install on Mountain Lion. Cleared NVRAM on the machine. screen went black three times yesterday. Sometimes it won't come back and it is necessary to reboot. Screen always comes back on reboot but sometimes only for a few seconds right after the startup grey screen.

Before the reformat of the hard drive the screen blanked while running the Apple Hardware Diagnostic - long test.

Have found a lot of similar reports online - no diagnosis or fix.

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Answer 2

Cerniuk

Level 1

27 points

Nov 13, 2012 3:46 AM in response to Fire_Bird

Do you have Witness installed by chance?

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Answer 3

Nov 13, 2012 3:07 PM in response to Cerniuk

I don't have Witness installed. Is that a possible culprit or a diagnostic? I am convinced now that the problem is a defect in the LED Bcklight card. I am taking the mahine in tomorrow to the apple store to have it replaced.

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Answer 4

Fire_Bird Author

Level 1

0 points

Nov 13, 2012 3:20 PM in response to Cerniuk

I do not have Witness installed either. The problem seemed to go away after a software update, however returned a few weeks ago. I'm convinced there is some problem as well, as it should not be doing this all by itself, especially on a brand new MBP retina, but I'm also having image retention issues with the screen so I'm trying to get one thing solved at a time.

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Answer 5

MrElvey

Level 1

56 points

Mar 18, 2013 11:56 AM in response to Cerniuk

Why do you ask about Witness? I just had the same problem - I was typing text in emacs and suddenly the screens went blank, and screen lock was enabled, and I see the same '...screenshot' messages in the log.

Running the latest OS on a MBP.

Come to think of it: I do have a 'hot corner' configured in System Prefs that blanks and locks the screen (setting:'Put Display to Sleep), so it's fairly likely something (e.g. a trackpad glitch) triggered it. Do others have this? (Please 'Like' if this resolves the issue.)

Mar 18 11:41:47 name WindowServer[134]: CGXSetWindowBackgroundBlurRadius: Invalid window 0xffffffff

Mar 18 11:41:47 name loginwindow[107]: find_shared_window: WID -1

Mar 18 11:41:47 name loginwindow[107]: CGSGetWindowTags: Invalid window 0xffffffff

Mar 18 11:41:47 name loginwindow[107]: find_shared_window: WID -1

Mar 18 11:41:47 name loginwindow[107]: CGSSetWindowTags: Invalid window 0xffffffff

Mar 18 11:41:47 name loginwindow[107]: find_shared_window: WID 50

Mar 18 11:41:48 name WindowServer[134]: Created shield window 0x4c67 for display 0x04272040

Mar 18 11:41:48 name WindowServer[134]: Created shield window 0x4c68 for display 0x1cab5d01

Mar 18 11:41:48 name WindowServer[134]: device_generate_desktop_screenshot: authw 0x7f843bc31b20(2000), shield 0x7f843bc2f410(2001)

Mar 18 11:41:48 name WindowServer[134]: device_generate_lock_screen_screenshot: authw 0x7f843bc31b20(2000), shield 0x7f843bc2f410(2001)

Mar 18 11:41:48 name WindowServer[134]: device_generate_desktop_screenshot: authw 0x7f843bc31b20(2000), shield 0x7f843bc2f410(2001)

Mar 18 11:42:03 name WindowServer[134]: handle_will_sleep_auth_and_shield_windows: releasing authw 0x7f843bc31b20(2000), shield 0x7f843bc2f410(2001), lock state 3

Mar 18 11:42:03 name WindowServer[134]: handle_will_sleep_auth_and_shield_windows: err 0x0

Mar 18 11:42:03 name WindowServer[134]: handle_will_sleep_auth_and_shield_windows: releasing authw 0x7f843bc31b20(2002), shield 0x7f843bc2f410(2001), lock state 3

Mar 18 11:42:03 name WindowServer[134]: handle_will_sleep_auth_and_shield_windows: err 0x0

Intentionally triggering the hot corner produces pretty much the same log entries.

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Answer 6

lmfdavis

Level 1

0 points

Jul 19, 2013 1:22 PM in response to Fire_Bird

Anybody find any resolutions with this? My 27" iMac has been doing it constantly lately...but of course, will only do it at home, not at the Apple store, so they don't believe me.

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Answer 7

Jul 19, 2013 2:42 PM in response to lmfdavis

Think it is totally a hardware issue. I replaced the PMI - $80 or so. My 27 inch still blanks. Next is replace the LCD panel. Not ready to spend that kind of money yet

Resetting parameter RAM and PMU seems to abate the problem but eventually it returns.

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