Display dark after sleep

This is annoying. It happens inconsistently but when it happens it requires a restart- any ideas?

I have similar problems using MBP w/Cinema 23". Sleep used to work but after the latest upgrade it is erratic. Various errors: Screen sometimes flickers on external monitor at boot; screen goes black while attempting to enter the PW before hitting "enter"; If I get the display Ok on monitor, when I close the lid I can't restore the display from sleep. This worked OK for the first five weeks I've had the combo until this week's software upgrade (downgrade, apparently?). Once, and only once, I used "restart" from the Apple menu and it appeared to work but when in mirror mode (usually keep that off because of differing resolution between notebook and monitor); could not repeat that success. I've changed every setting I can find to no avail.

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Main display blank after sleep under Mavericks

I use a NEC Multisync LCD 2690 as my main display, and a small Hansol H550 as a secondary one; when waking up from sleep, the NEC is blank and everything is crammed up on the Hansol. Under Lion, I could go to the System Preferences, choose Monitors and Detect Monitors to force the displays to correct themselves but this feature is absent under Mavericks; any idea how I could correct this without having to perform a complete restart each time the Mac Pro goes to sleep?

Found the so-called missing feature: in System Preferences, choose Monitors and hold down the Option key to get the Dectect Monitors button. Still, loosing the main display after sleep is a BIG bug...
P.S. I’m working with a French system, the naming of the features might be slightly off.

Display dark after bootcamp?

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Did you order your MB with the 4GB of RAM or did you put it in yourself? I've read of RAM problems causing your MB to not wake from sleep. If you added the RAM yourself, try putting the original RAM back in and see if you get the same result. -GDF

Cannot resume external display/monitor after sleep

Hi,
I am using the latest MBPr with yosemite OS. I connect to second display using the thunderbolt to VGA adapter. After returning from sleep stage, the external monitor will not display anything. It just say no signal from my MBPr. I need to disconnect the cable and reconnect it back to have the signal back normal. This never happen in maverick.
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Same problem here, except I am using straight HDMI. Very annoying.

Abrupt change of display-color after sleep

I POSTED THIS IN THE iMAC DISPLAY-SECTION OF DISCUSSIONS BUT NOBODY REPLIED:
After I wake up my iMac 27, after it was in sleep-mode
for some hours, colors look different for less then a second (warmer),
then it changes to something more cold/bluish. The change is exactly like
a manual change of the calibration/monitor-profile via settings.
There is NO blackscreen between the change of the colors,
like I said: exactly like a monitor-profile-switch.
I didn't change/add a different profile than the standard yet.
Is my monitor faulty and/or what's happening with it?
PS: I can't tell if the "less then a second visible"-profile is superior,
but i'd like to test it, if possible I installed all the latest updates.
But amongst them there wasn't that firmware update. Maybe
cause I CTO'ed the iMac a few weeks ago.

Haven't experienced this on my i5 iMac, but my monitor is hardware calibrated with a custom profile (first thing I did when I switched it on). I use the ColorMonki device.
I would recommend you hardware calibrate your monitor and see if the issue re-occurs. If it does contact Apple Tech Support for further advice

MBP w/Retina Display Problem After Sleep

I have bought a MBP Retina Display 15" in July 2012 and until recently I did not have any problems with my Mac. However, I am having the same problem as the one in this video http://www.youtube.com/watch?v=zt0tS8KJKuQ
There seems to be no problem if I don't leave my mac on sleep for so long but what is the sleep function and power nap for in the first place. Is there any solution to this.
Thx

Hardware does fail occasionally, but part of why I would take mine to an Apple Store would be for an opinion on whether the problem was hareware or software. Since it has been less than a year since your bought your MBP-R, it is still under warranty, just not eligible for free phone assistance. If you have neither an Apple Store nor a trusted repair facility available to you, that will make it tougher.
Do I understand you to say this only happens after it has been asleep for a longish time? You can keep it from happening by waking it up sooner or by shutting down when you expect to be away for a longer time? I'm not sure what that tells us, but it in interesting.
Do you by any chance have a bootable copy of your system on an external disk? Preferrably one that was made before you started experiencing the symptoms. If so, does the MBP-R present the same symptoms when booted from that copy?

Half display darker after installation last osx update

Hello,
After installing the last update for osx (10.8.3), the computer did a reboot , and right after that, the left side od the display is mauch more darrker than the right side.
Anyone can help me with that please. I dont know how to contact with a apple support technique. can any body help me please??

Sounds like a backlight problem.
see > my imac 27in screen has gone darker to...: Apple Support Communities
and > One side of display is darker than the...: Apple Support Communities
To contact Apple Support, go to > Apple - Support - Contact Apple Support

MBP display checkerboard after sleep

Hi Guys,
I found yesterday after opening the lid of my MBP once I got home from work that the screen had turned into a multi-coloured checkerboard of 'fuzzy' patches.
Doing a hard boot didn't resolve the issue as it did the same thing, then cleared and got 'stuck' on the blue screen that flashes up on boot. The second time I did a hard boot though, it came good.
I have read elsewhere that this is something to do with the logic board.. Anyone else having the same problem?
I use an older CRT monitor at work as a second display and I am pretty sure unplugging it had something to do with it the first time, but it just happened again after waking the computer from sleep. (Running Motion 2 at the time)
Any help will be greatly appreciated!

Hi Guy's,
I bought my MBP last Thursday and it was working fine until 2 days ago when I got the checkerboard after only a few minutes of use. Hardware check gave back the Failure code: 4SNS/1/40000000:'Tm0P' which I sent to Apple but no reply yet.
I'm bringing it back to the shop first thing tommorrow morning. I don't have time to wait a week or two for them to fix the problem especially if their "motherboards" all got the same hardware onboard. I haven't been able to spot any stories by Apple about this issue.
Looks like Apple has a QA issue with their ATI-X1600, or that the QA issue is ATI's all the way.
MBP 17" 2GB Mac OS X (10.4.7)

Mac Mini won't remember display profil after sleep

Hello! I'm posting this for a friend who experiences issues with its new Mac Mini.
The system won't keep its display profile setting when waking up from sleep. My friend have to go to System Preferences to select the right display profile manually, each time.
The display is some 17 inches CRT most probably connected by a VGA plug.
Any idea?

Clif
It could be the FW disk is not mounting early enough. Did you try holding down "Option" at startup, the using the Startup Manager to select the disk?
See Startup Manager: How to Select a Startup Volume. You may need to wait until the scan finds your FW disk.

Display wakes after sleep for no apparent reason

Had the imac for 6 months first time I have had this issue.
I put the imac to sleep and within 30 secs it wakes with my password login dialogue box (the dialogue box is normal, I have the display password protected), it then goes blank as if going back to sleep, then does the same thing again repeatedly. If I don't login then eventually the screen goes blank, the sleep light goes off all together, then the machine will not wake and I have to switch it off and back on again to get it working.
I have a bluetooth mouse and keyboard, sometimes if these are knocked then the machine will wake from sleep, however, I have made sure this is not happening and so this does not explain the problem.
Any help gratefully received, I am baffled!!

Go to System Preferences and select Energy Saver. Uncheck "Wake for network access" option. See if that if that solves your issue.

Won't restart after sleep

This is a common if infrequent issue, but my new MacBook Air running 10.9.2 won't restart after sleep. I've connected it to a Thunderbolt display, and after sleep all I get is a finger pointer on the display and nothing else. Only shutting down and restarting works.
I've seen this issue in other posts, but it's never affected me until I replaced my previous MacBook Air with a new one.
Has anyone got a resolution? It's very annoying with applications and files open on crashing.

Hello Slinky09,
Thank you for using Apple Support Communities.
For more information, take a look at:
OS X: When your Mac doesn't sleep or wake
http://support.apple.com/kb/TS5357
If your Mac doesn't sleep or wake as expected, review the steps in this article.
Reset SMC
Reset NVRAM/PRAM
Test with external devices disconnected
Try Safe Mode
Try another user account
Have a nice day,
Mario

No display after sleep with macmini using DVI - S-video/composite under XP

Hi guys, I have installed XP on my mini. I have CRT TV so I'm using
DVI -> S-video/composite to output to my TV.
The problem is after sleep - there is no display (it's woking only after reset).
I installed the latest drivers from the mac os 10.5 DVD & updated the graphics driver from Intel.
Please help

Unfortunately, no answer, as I'm having the similar problem with a Samsung SyncMaster 215tw and a G4 Mini. It works with the DVI-VGA adapter and the VGA cable into the montor's VGA port. However, connecting with the G$ Mini's DVI port with the monitor's DVI port using a DVI cable doesn't work. I cannot figure out why this doesn't work.
The DVI cable is good and the monitor's DVI port is good, as the connection does work using my friend's Intel Mini's DVI port connected to the monitor's DVI port using the DVI cable.
The monitor is new, too, and otherwise works fine with my other Macs connected with the VGA port. (I've not tried the additional ports as yet.)
Although the monitor is supposed to synchroize automatically, I also tried manually presetting the G4 Mini to different resolutions, but that didn't make any difference. The screen remains black when it should be showing the booting Apple icon.
Any idea what is going wrong here, please, as it sounds as if this same thing occurs with various monitors?

No Display after wake up after sleep

My son has a MacBook Pro (Late 2007)... never any problems before... never
This morning, he put the computer to sleep by closing the lid. After about an hour, when he opens the lid, the display does not "wake up." The computer is on... white light... everything... no display.
After a restart... still no display... there's the chime... the keyboard lights come on... just no display.
The computer is on... just no display. You can hit the power button once to turn it off, then the return key to select shut down, just like you would if the display is on...
What could cause this issue? Are there any "fixes" short of brining it in for service? Any suggestions would be greatly appreciated.

Try resetting your SMC and PRAM.
Resetting the System Management Controller >>
Dave M.
MacOSG Founder/Ambassador  An Apple User Group  iTunes: MacOSG Podcast
Macsimum News Associate Editor  Creator of 'Mac611 - Mobile Mac Support'

Display turns "dark" after 1 minute

Hi, first of all forgive my english
I have a an unpleasent problem with my display, it turns dark after 1 minute of no using it.
I have a Satellite, Windows 8, and Toshiba Eco utility. I have tried to change the time when the display turns dark or when the computer shut down in a lot of opportunities in the "Power options" item, i even tried to make my own plan of energy, but nothing works :/ My display still turns dark after 1 minute.
I really need to make it last longer on! D: it's driving crazy
thank you, i really appreciate your help.

Please join the following thread. When you do, give your complete model number.
Display Being Turned Off Despite Win 8 power option Settings on P875 Laptop
-Jerry

MBA not always recognizes external display after sleep

Hi,
I have a 2011 MBA and use it on a external display (Dell 2709w) with the lid open. The issue with this MBA is that after sleep it often (every second time I wake it up) doesn't show anything on my external monitor. In order that the external monitor works again I have to plug the DVI cord out and in or press recognize monitors under monitor settings.
I also did a PMC and SMC reset but both did not help.
I have also done a complete reinstall witch did not help as well.
I also did a test with a MBA from a friend (exact same model) and his always works with the external display after sleep while mine only works every second time.
Could this be a hardware defect? sound pretty strange to me, but who knows...

I have managed to make the Apple Hardware test by just pressing "D" while restarting. The test, however, did not find any error - but this does not surprise me as I think it only tests the ram.

Display dark after sleep

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