MacBook Pro :: It Won't Wake To External Monitor In Clam-shell Mode
May 23, 2012
When I have my macbook hooked up to external monitor it works great unitl I put it to sleep. Sometimes it kicks right up to the external monitor but the majority of the time it cant reconnect to the monitor. It just turns blue then off then blue likes its trying to figure out what to do eventually it says out of range. I then have to unplug the external monitor, wake up my mac with the screen open reconnect the monitor wait for it to pick up and then close it again and wah laaa it works.
Info:
MacBook Pro, Mac OS X (10.7.3)
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May 8, 2012
After I installed OS X Lion 10.7.3 on my MacBook Pro and tried to use it in clamshell mode my computer appears to build up heat and the fans started running.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Jun 12, 2010
I can get it to work sometimes. When you close the lid it goes to sleep. What do you do to get it to work using the external monitor?
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Apr 16, 2012
cannot get my macbook pro to stay in clamshell mode.I use MBP connected to a spectra view monitor, display fine until I touch the keypad then switches into mirroring mode.
Info:
MacBook Pro, Mac OS X (10.7.3)
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Jan 27, 2010
When I leave my clam shelled computer alone for a while, it doesn't start the screen saver after 5 minutes like I set it to. Is this intentional on Apple's part? If so, is there a program I could download to make it work?
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Jun 4, 2012
I have an 13" MBP that I ordered new in April, 2012. It is running Lion. I have an external monitor that is capable of 1440x900 resolution. I have an external keyboard and trackpad hooked up, and I like to close my MBP up and stick it in a BookArc. I want to be able to have the internal display disabled and to have the MBP only allow me to put windows on the external display, so long as the lid is closed. I also want to be sure that I am taking advantage of the resolutions available on my external monitor, which are higher than those supported by the internal display (specifically 1440x900).Â
This doesn't seem to work because I either have to allow the MBP to continue to draw my desktop across both screens (internal and external), OR use the "mirror displays" mode, which restricts my resolution of my external monitor. This means I either forgoe the additional resolution benefits of my external monitor, or I end up with windows that fall off-the-cliff, so to speak, because they are drawn in the portion of the desktop that would be shown on my internal display (which is closed).Â
I've read the community support pages on using the MBP with an external monitor, most relevantly, this page. It simply recommends using the "mirror displays" option. However, this option, as I mentioned above, doesn't allow me to make use of the additional resolution, and my external display looks bad. how to keep the 13" MBP in closed clamshell position, with the internal display disabled, and use my external monitor at resolutions higher than those allowed by the 13" MBP but which are available to my external monitor when not in "mirror displays" mode?
Info:
MacBook Pro (13-inch Late 2011), Mac OS X (10.7.3), External display (1440x900)
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Mar 26, 2012
I'm using 2 IMac 27' and one is simply used as an external display. When I wake up the computer from sleep, it works on the main monitor, however the external display still has a black screen. I have to unplug the external monitor to get it to wake up. I tried unplugging thunderbolt and replugging it in which worked the first time, but same issue again not waking up.
Info:
iMac
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Feb 2, 2012
I've been having problems with my mid 2009 2.53GHz MacBook Pro 15" not waking up from sleep after I open the clamshell (screen) back up. When I open the screen after letting it sit for a while, I can hear the HDD spinning up and the status light on the bottom of the MacBook turns off (like it normally does when the clamshell is opened), but the screen is black and there is absolutely no response in any key combinations or trackpad taps. I've been having this problem for about a month now and its getting pretty annoying. I've tried a total wipe of the disk and a fresh Lion install with a full TimeMachine restore, but I'm having absolutely no luck. The only thing that can bring the MBP back to life is a hard restart. Sometimes when I hard restart it, it comes back to life right where I let off (basically like when the battery loses all its juice and restores everything thats open), but most of the time, it starts up like a normal boot with no restore.Â
Info:
MacBook Pro, Mac OS X (10.7.2), MacBook Pro 15" 2.53GHz 4GB RAM
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Jun 23, 2012
Our display flickers on one side and has multicolored vertical bars running down the left side at best, or the whole screen greys out over the top of the graphical display, is physically no longer fully attached on that side near the hinge (you can press it down quite a bit after it has been closed), and the aluminum clamshell seems like it's warped. The bottom access panel has become no longer a smooth fit - it sticks up a few millimeters at the gap instead of being flat. We used to be able to hold the back left side and the screen would work, now we have been sitting it on a wooden structure with a back support and pushing it against that so we can see the screen for the past year or two. Now the flickering vertical bars are getting worse and the wooden support doesn't always work, and as an added bonus, the trackpad recently stopped working (it no longer 'clicks' and acts like it's constantly pressed down, so we have to use an external mouse with it). It's pretty frustrating because we've babied this thing (it's never been dropped or abused and has only left the house like twice, and one of those times was to take it in to see about this very problem!) and it seems like it's a manufacturing defect, but of course we never had AppleCare and this powerful expensive beast is now a desktop computer with a super hard to see screen. I've been told we need to pay $400 to get a whole new clamshell.
Info:
MacBook Pro (15-inch Late 2008), Mac OS X (10.5.8)
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Mar 25, 2012
This started recently and is quite annoying. Like the title says, if I put my computer to sleep via apple menu/sleep while it is attached to my external monitor the computer will not "wake up". When I try to wake up the computer the sleep indicator stops pulsing and I can hear the hard drive start spinning. As a result I must force shut down the computer by holding the power button. The computer is fully charged so it is not a low battery issue. The external monitor is an 20" Apple Cinema Display, it is attached via Apple's DVI connector. Â
Unplugging the monitor dongle and replugging it in do not work. Pressing any assortment of keys does not bring the display back up. Â
I've tried resetting PRAM, disk permissions, and verifying the disk.Â
Info:
MacBook Pro, Mac OS X (10.7.3)
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Feb 10, 2012
my problem is since the update to 10.7.3, Lion isn't waking up from standby when I have left my external Monitor attached to my MacBook Pro. It will flash the keyboard backlight, but both displays remain black. And when i disconnect the external one, nothing happens. Only possibility to come out of this state: Hold power button for some seconds until it shutds down "hard".Â
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Jan 3, 2011
I have used my ultimate 11" on usual mirrored display on battery power and in clamshell mode.
A few hours ago, I was running many apps in mirrored mood and my air just began to lag so badly after an hour. Expose is slow as well as surfing and clicking. I wondered what happened. Then I plug back power supply and close the lid of Air, hence running in clamshell mode. It then returned to full speed.
Please help explain to me if title is true. It is disturbing to learn that plugging into to ext monitor could lag.
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Jun 4, 2014
I need to change resolution of external monitor in clamshell mode
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Feb 10, 2012
my problem is since the update to 10.7.3, Lion isn't waking up from standby when I have left my external Monitor attached to my MacBook Pro. It will flash the keyboard backlight, but both displays remain black. And when i disconnect the external one, nothing happens. Only possibility to come out of this state: Hold power button for some seconds until it shutds down "hard".Â
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Jun 4, 2014
I am currently am using a MacBook Pro mid 2007 and was wondering it is possible to connect it to an external monitor and if so use it when closed without the comp going into sleep mode.
Info:
MacBook Pro
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Jul 24, 2010
At one point I had my external monitor set up to work with windows, so I know how, but since then I have reinstalled windows. I haven't used windows in a long time, so didn't bother setting it back up. Recently, my macbook's screen broke, I can boot into OS X fine by plugging in an external keyboard or mouse, or simply by closing the lid quickly before the primary display loads, thus booting it into clamshell mode using only an external display. I cannot however do this with windows, and since my screen is broken I cannot set the display properties as I cannot see them. Is there any way to either boot windows into clamshell mode or set the display properties using keyboard shortcuts?
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Oct 18, 2010
I have some ibooks with cracked screens they will work with an external monitor but only when the os loads. I tried starting in single user mode and the boot option menu using the external monitor but it does'nt kick in only when loaded to the os. Anyone know a way to use single user mode or the boot option menu to display on my external monitor? Is that possible?
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Dec 20, 2010
If I put my MBP to sleep (by closing the display) and then decide to use it right away (in a minute or less), are there any risks to the hard drive involved or any sort of issue?
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Apr 20, 2012
When I close then open the lid on my MacBook, it will not wake up from sleep mode. I have to reboot by holding down the power button for 10 sec. When it restarts, it takes a long time to get past the gray screen with the apple logo. I also have this same problem when it goes into sleep mode, when left idle. I have since changed the settings so it will not go into sleep mode when idle in system preferences. I have reset PRAM and SMC, but the problem still persists.
Info:
Macbook (13-inch early 2008), Mac OS X (10.5.8)
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Jan 13, 2008
I have never had a Mac Pro before, but I have owed 2 Imac's and a power mac and 2 MacBooks. The issue I am having is when I put the machine to sleep when I wake it back up it is like it does a restart. It does not start me back up where I was before.
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Feb 24, 2012
Mac owner for 2 months now and have had no problems till today...had to reboot to wake up from sleep mode...one time occurrence or start of an issue?
Info:
iMac (21.5-inch Mid 2011)
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May 5, 2012
My Mac would not turn on this morning from sleep mode. I pressed the power button and nothing. Then I did it again and heard the fan shut off inside so I tried again and up it came. Also I cannot wake my Mac up unless I press the power button. I used to press any key on the keyboard or move the mouse and it would wake up, but now that doens't work. I don't know if this could be a reason, but my mother has a horrible habit of unplugging it when it storms. It's always asleep and I've told her not to do that and to make sure it's turned off before ripping the cord from the wall. But she continues to do it when it storms.
Info:
iMac
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May 28, 2012
Computer would only start after sleep mode if I unplugged the power cord. The power button would not do anything, even if I held it for a long time.
Shut down and start up would work normally. Only effected sleep mode.
After much trouble shooting I found that I had a bad USB hub. Everything on the bad USB hub would work fine so I didn't suspect it.
Info:
iMac, Windows 7
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May 13, 2012
For some unknown reason I will put my mac to sleep and at sometimes it will wake up without any command to wake up - why this happens and how to correct it?
Info:
iMac
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Oct 16, 2008
I picked up a new MacBook yesterday and I noticed a weird issue when coming out of "monitor sleep" mode, not regular sleep mode.
When I move the mouse, the external monitor shows what you see in the picture, kinda like a TV with no signal. The MacBook screen works fine so what I just do is unplug and re-plug in the DVI plug and everything is good again.
My 24 inch Dell monitor worked fine with my M1330 and other computers so I know it's not that. Does anyone have the same issue or maybe give me some light on this?
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Jun 27, 2009
I have a 22" Dell external monitor on my MBP. I know that I just close the cover to my MBP to shut off the screen. What do I do in those instances that I want to use both screens? There has to be something simpler than restarting the MBP?
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Aug 5, 2009
As said, my current set up is an HDMI - DVI cable (HDMI to monitor and DVI to adapter) and my DVI - mini DisplayPort adapter, everything is connected fine but when I turn on the monitor, it says cable not found... and nothing is displayed on the screen but on the Macbook side of things, it sees the monitor is connected (I can extend the screen and leave the screen) but other than that, it appears I cannot get an image on the monitor, pressing every button on the monitor does not work either.
Any other information that may seem necessary, let me know. I tried clearing my PRAM and clearing the power and such but nothing seems to work.
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Oct 20, 2007
I've been fighting bad sleep crashes for over a year. Sometimes it would freeze when it started sleep, sometimes when trying to wake from a sleep. I've spent countless hours researching the problem, reading everything on the boards. I tried resetting the PMU, turning off Bluetooth, removing all USB, and all of the other suggestions. Nothing alleviated the problem. Last week I replaced the lithium battery on the mother board because it wasn't keeping the correct time. So far it is sleeping and waking perfectly for the first time in ages. No more freezes or jet engine fans. I have my fingers crossed. Power Mac G5 dual 2 GHz, purchased June, 2003
Information:
Dual G5
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Jan 30, 2008
My iMac is about 4 months old and about twice a month after sleeping overnight the computer will not wake up. After several attempts pressing keys on the keyboard and clicking on the mouse, I have to unplug the Mac and then press the start button on the back
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Sep 11, 2008
My G4 powerbook (running Tiger) seems to be stuck in sleep mode. I turned it on and the screen remained black but the sleep button is flashing on the front.
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