Upon wakeup from sleep, external display is not detected

Hello. I have a mini display port to vga and have an external display hooked up to my 15" macbook pro. Once I put the macbook pro to sleep, and then wake it up, it turns to a blue screen (the kind when you plug in or remove an external monitor), and then prompts me for my password. Does anyone else have this issue? I think it might be because I did not buy the "official" mini display port to vga adapter (got mine from monoprice), and want to know if anyone has this issue using the official adapter. Thanks.

Exactly the same issue. My Eizo Coloredge was working fine after installation until (just now) I dared to do a restart...
I have tried various different displays and connections over the past 20 minutes and have restarted my mac (late 2013 MBP 15' Retina) and connected / disconnected multiple times. Neither my Coloredge via Thunderbolt or HDMI (no signal detected) is recognised, nor a Samsung LCD via HDMI.
SO frustrating that something this basic should now be 'broken' when it was fine under Mavericks (and earlier OS). Come on Apple, let's get a fix. Plenty of people rely on external monitors.
Sigh.

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After Lion Upgrade, External Display ( DVI ) Not detecting Monitor.

This problem is on my Macbook Pro 17" 2006 (ish) intel core 2 duo.
I have allways used the display port with a DVI cable connected to a DVI port on an external monitor to extend my desktop.
For some reason after upgrading to Lion, I can't detect the external display. If I use an adapter ( Display connector to VGA ) and connect into the VGA input on the monitor, all works fine.
I did connect to the DVI port and left it connected for about an hour, then clicked the " Detect Displays " button, and it worked once. But after this it hasn't worked again.
I have changed the cable, and even the monitor, but it just won't detect..
Any Ideas ??
Dan

After ugrading to LION i can't use an external monitor or TV-screen.
Just purchased a Mini Displayport to HDMI adapter to connect my 13" macbook to an HDTV. I plugged the mini display to hdmi adapter into my macbook and then connected an hdmi cable from the adapter to the tv. the macbook display briefly went blue but then display the normal screen again.
I've search for the past few hours with no luck. I've tried to manually detect the display and nothing. I've tried 2 different TV's and both have the same result. I've tried rebooting my macbook also with no luck. Am I missing something? If I go into System Preferences > Displays there is no mirroring options or anything like that. It just shows the "Color LCD" option. Like I said, upon clicking the "Detect Display" button, nothing changes and no additional display are detected for use.
Any help would be greatly appreciated.

Upgraded to Yosemite and now external display is not detected

I just upgraded to Yosemite on my 2009 MacBook Pro and now it won't detect the external display. It worked perfectly before the upgrade. I have the display connected by USB. Is there anything that can be done about this? I really need that external display for work and am really regretting downloading Yosemite.

Exactly the same issue. My Eizo Coloredge was working fine after installation until (just now) I dared to do a restart...
I have tried various different displays and connections over the past 20 minutes and have restarted my mac (late 2013 MBP 15' Retina) and connected / disconnected multiple times. Neither my Coloredge via Thunderbolt or HDMI (no signal detected) is recognised, nor a Samsung LCD via HDMI.
SO frustrating that something this basic should now be 'broken' when it was fine under Mavericks (and earlier OS). Come on Apple, let's get a fix. Plenty of people rely on external monitors.
Sigh.

External Display will not turn back on after sleep

Just bought a new MBP last week and gave my wife the MB. I typically attach to an external 24" display and run in closed clamshell mode. I have been doing it for quite some time with no issues. Now with the new MBP if the energy saver kicks in and turns off the display, and/or the energy saver puts the computer to sleep when I attempt to wake it up the display flashes then goes blank. There is no way to turn it back on. When I open the clamshell the internal display will only show some random pixels and a white line at the top of the screen. There is no way to correct it unless I shut down the machine.
I am running with the Nvidia card, not the internal Nvidia. If I manually put the computer to sleep it will wake normally with no screen issues. It will also not act up if the external display is not connected.
Any help or suggestions of a setting I might have wrong that would cause this?

It is a Gateway FHD2400. Connected from mini display to HDMI. My previous MB was connected to the same monitor for the last year with 0 issues. It was connected mini dvi to VGA.
The issue is strange because it only happens when the computer turns off the screen or sleep. When I put it in sleep it doesn't happen.

Black screen upon waking from sleep

Hello,
I have an intermittent problem with waking my entry-level MBP from sleep; on some occasions, the screen remains black instead of the system waking up and displaying the Finder.
Recently, upon waking from sleep, the authentication dialog displayed, I typed my password and pressed return, the dialog dismissed, the screen remained black, and the wait cursor displayed without spinning.
To recover, I needed to force power down and cold reboot.
system.log (in Console) contained the following entry at the time of the crash.
Aug 14 07:39:51 BF-H-MBP kernel[0]: NVChannel(GL): Graphics channel exception! status = 0xffff info32 = 0xd = GR: SW Notify ErrorAug 14 07:39:51 BF-H-MBP kernel[0]: NVChannel(GL): Graphics channel exception! status = 0xffff info32 = 0xd = GR: SW Notify Error
The entries surrounding the one above were as follows (the next to last one evidently was the final entry before the forced power down).
Aug 14 07:39:47 BF-H-MBP kernel[0]: IOBluetoothHCIController::restartShutdownWL this is a wake from sleep
Aug 14 07:39:47 BF-H-MBP kernel[0]: System Wake
Aug 14 07:39:47 BF-H-MBP kernel[0]: IOUSBWorkLoop::closeGate - interrupt Thread being held off
Aug 14 07:39:51 BF-H-MBP kernel[0]: NVChannel(GL): Graphics channel exception! status = 0xffff info32 = 0xd = GR: SW Notify Error
Aug 14 07:39:51 BF-H-MBP BatteryUpdater[3590]: Battery does not need the BatteryUpdate v 1.2 (0x2)
Aug 14 07:39:51 BF-H-MBP lookupd[3588]: lookupd (version 369.6) starting - Tue Aug 14 07:39:51 2007
Aug 14 07:50:08 localhost kernel[0]: hi mem tramps at 0xffe00000
Can someone diagnose the problem based upon the above Console entries?
Thanks in advance!

Hi,
Thanks for taking time to post.
My question is different than the one your posting answers.
My question is, what is the diagnosis of the problem based upon the Console log entries that I've posted (rather than "How do I recover from the black screen?")?
Cheers!

Launch application upon wake from sleep

Is there an automator that will launch an application when the computer wakes from sleep? I do video chats w/ my elderly mother via iChat. I can wake her computer from my home using WakeOnLan. However, she sometimes quits iChat so it is not always running. I would like to have some sort of automator set to launch iChat everytime the computer wakes from sleep. I assume if iChat is already running, it would not matter.
If anyone knows how to do this or if it is even possible, please let me know.
Thanks,
Randy

Gary,
Thanks for pointing me in the right direction. I ended up using DisplayWatcher as it also has the ability to run an automator application upon waking from sleep. There were some other apps that were too complicated for me -- had to enter Unix commands/code and I did not understand how to do this.
Thanks again,
Randy

I have problem with WIFI every wakeup from sleep after 10.7.3 (21.5-inch, Mid 2011)

Since 10.7.3 update, i have to manually reconnect to my WiFi network at every wakeup from sleep in 21.5-inch, 2011 (intel i5)!
Apple fix it!

You're not talking to Apple. This a support forum made up of non Apple employees.

Airport fails on wakeup from sleep

Hi,
I've got a iBook G3 running 10.3.9 that will not see any wireless networks when it wakes up from sleeping. I've tried using programs like MacStumbler and iStumbler but even they will not see any networks (and there are usually at least 5 within range). However, if I restart my computer and then log in the computer sees all the wireless networks and automatically connects to mine. The problem only occurs when waking up from sleep.
As solutions I've tried logging in as another user, repairing disk permissions, and physically removing and re-inserting the airport card. None of these have worked though. I believe the issues started right around the time I installed the latest security patch.
Does anyone have any ideas on what I might try to get my wireless network to work again when my computer wakes up from sleeping? Thank you so much.
-NifflerX

Thank you very much for the advice. The link you posted actually goes to: Mac OS X: Starting up in Safe Mode, but I tried the following instructions to reset the PMU (from this website: http://docs.info.apple.com/article.html?artnum=14449#faq4
For iBook (16 VRAM) and later models of iBook, there is no physical reset button.
1. If the computer is on, turn it off.
2. Reset the power manager by simultaneously pressing and then releasing Shift-Control-Option-Power on the keyboard. Do not press the fn (Function) key while using this combination of keystrokes.
3. Wait 5 seconds.
4. Press the Power button to restart the iBook computer.
But I'm not sure that is the right way to reset the PMU. I couldn't see a physical PMU button to reset, which is why I tried the above way.
When I attempted the PMU reset and rebooted my computer the time was still accurate but the modified date on my hard drive changed to 12/31/1969 6:00 PM. Not sure what that means but I wanted to add as much info as I could.
In the end I saw the same thing, my computer connected when it first started up, but upon waking from sleep it still didn't connect. Is there anything else I can try? Thank you again for all your help.
-NifflerX
iBook G3 Mac OS X (10.3.9)

Hello all, I have a 6G iPod Nano that I currently use as my primary watch. A week or so ago I started to experience a blank white screen when I press the "sleep/wake" button instead of the watch face (I have it set to wake from sleep to display the cl

Hello all,
I have a 14.88G iPod Nano that I currently use as my primary watch. A week or so ago I started to experience a blank white screen when I press the "sleep/wake" button instead of the watch face (I have it set to wake from sleep to display the clock). When I hard reset it, it will come back fine and the screen will respond and work as normal, as soon as I manually put it to sleep by pressing the "sleep/wake" button and then try to wake it the same thing happens and I have a blank white screen that doesn't respond to touch gestures or anything.
What I have tried so far to no avail:
Numerous hard restarts (holding the "sleep/wake" button with the volume - button).
Tried this: iPod nano (6th generation): Hardware troubleshooting
Changed the watch face to display.
Recharged the device overnight (without full discharge).
Since none of this works I'm out of ideas. Eventhough I have a 6G Nano it should no longer be under warranty since I was sent it as a replacement for a different (older) product.
Any ideas? Is this a known problem? Thanks in advance for any insight any of you could provide. Also, what time is it??
Regards,

Hey,
I have the exact same problem as you have described. I also used my ipod as a watch but starting from today, whenever I unlock it the screen turns white until a reset is done. Even a factory reset through itunes didn't fix it.
Have you found any solution?
Bah, this is annoying.
//Gubbar

When i put my Mac for sleep it takes more time than normal ( 20 secs). Sometimes, coming back from sleep the system is not responding (freeze).

When i put my Mac for sleep it takes more time than normal (>20 secs). Sometimes, coming back from sleep the system is not responding (freeze).

Perform SMC and NVRAM resets:
http://support.apple.com/en-us/HT201295
http://support.apple.com/en-us/HT204063
The try a safe boot:
http://support.apple.com/en-us/HT201262
Any change?
Ciao.

I can't import my movies to work on them. They are coming from a external hard drive, not directly from the camera, its type mpeg-e (.mts)

My movies are type MPEG-2
I can't import my movies to work on them. They are coming from a external hard drive, not directly from the camera, its type mpeg-2 (.mts)
What can I do ?

1. Is your external HD connected by firewire?
2. mpeg2 is the final compressed delivery format of a DVD, not intended for editing, and iMovie cannot handle such files, so you need to convert them first:
For that you need mpegStreamclip:
http://www.apple.com/downloads/macosx/video/mpegstreamclip.html
which is free, but you must also have the Apple mpeg2 plugin :
http://www.apple.com/quicktime/mpeg2/
which is a mere $20.

My songs I add from my external harddrive do not play in itunes. They appear when I search them in the search bar but if I click on the album it does not come up. HELP!

My songs I add from my external harddrive do not play in itunes. They appear when I search them in the search bar in Itunes but if I click on the album it does not come up instead an album from icloud plays.HELP!

ErinGillaim wrote:
The audio format or the codec may not be recognized by the iTunes
It is else it would not have been able to be selected to import.
The simple fact that it shows up in iTunes Search means it is in the iTune library.
It is a bug where some imports do not show up in the iTunes library (but they usually show up in Recently Imported playlist) until a restart of iTunes, which usually fixes it.

When I wake my iMac from sleep, the wireless does not connect. I have to shut shutdown and then restart and then it connects. I am running Lion 10.7.3 Any thoughts?

When I wake my iMac from sleep, the wireless does not connect. I have to shut shutdown and then restart and then it connects. I am running Lion 10.7.3 Any thoughts?

Been waiting along time for this problem to be fixed. Unfortunately the update hasn't help at all and even made the situation worse. Now my airplay connection from iMac to stereo abruptly stops after about 10-15 min. so I have to go over and quit wifi, start it up and find my airport network. Not sure why it always has a problem with the apple airport network. My neighbor's pc network is always there.

Upon resuming from sleep, the monitor goes black

the laptop is actually booting, but the screen flashes on for a sec then goes dark. I can still see the screen and icon to log in, but the backlight is out, and I cannot log in actually. if I close the lid and wait then open it again, it does it again. I takes sometimes 5 times for it to finally stay lit and work again. This also happens if I do a hard boot, sometimes taking up to 8 times with a hard boot. I thought it might be related to the OS so I installed a partition and installed windows but it happens the same to windows. It never goes out when I am working on it, only if I let it go to sleep or power it off and then try to resume or turn back on. Any ideas?

Fix - *Dont give your iMac a static IP*
go to your Main or First routers settings and Give the iMac a SET IP so that it never changes. Then renew your DHCP lease and that set IP will come up and stay there. FOREVER!
I just resumed from sleep and it is not doing it anymore.

User Name Upon Waking from Sleep

Hey guys,
We're given the choice of entering a password upon waking from sleep. I kinda want to take it one step further and have the user name erased too so that people have to enter the user name and the password upon the computer waking. Does anyone know how to do this or if it's even possible?
Thanks for any help.

The only way I can think of would be to log out rather than just put it to sleep or let it go to sleep. However, if you have a good secure password there really isn't too much reason to require the additional step.
There may be a way to do it but I can't think of one.

Upon wakeup from sleep, external display is not detected

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