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User profile for user: Toack
Toack Author
User level: Level 1
0 points

Second monitor lost

Updated to Mavericks (worst decision of my life) without backup-ing with Time Machine (second worst decision of my life) and I'm having troubles now with my second monitor.


If I make the macbook pro go to sleep, then wake it up, the second monitor is just black, although it's there because the Display settings in the System Preferences shows two monitors and I can even Gather Windows and change resolution to my external monitor, but is shows black, not even the mouse pointer.


I can get it back by logging out/in but that means I have to close all my programs and current working files just to awake the mac.


Is there anyone with the same problem and hopefully a solution to mitigate my frustration right now with this cute apple decisions ??


I placed another discussion before but it was deleted because I didn't praise mavericks enough.


Thanks in advance.

MacBook Pro, OS X Mavericks (10.9), FREE UPGRADE

Posted on Apr 3, 2014 4:21 PM

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Question marked as Best reply
User profile for user: pedro d
pedro d
User level: Community Specialist

Posted on Apr 5, 2014 9:10 AM

Hello there, Toack.


The following Knowledge Base article provides some great recommendations for troubleshooting issues with display:


Apple computers: Troubleshooting issues with video on internal or external displays

http://support.apple.com/kb/ht1573


No video or no signal, image distortion, "snow," or flickering

Check connections

When using an external display be sure to check the following:

  1. If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
  2. Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
  3. Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
  4. Try unplugging the video adapter or cable and then plug it back in.
  5. If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.

    Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.

  6. If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.Reset the resolutionStart by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
  1. Start up in Safe Mode.
  2. From the Apple () menu, choose System Preferences.
  3. Choose Displaysfrom the View menu to open the preferences pane.
  4. Select any resolution and refresh rate that your display supports.
  5. Restart your computer.


Thanks for reaching out to Apple Support Communities.


Cheers,

Pedro.

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2 replies
Question marked as Best reply
User profile for user: pedro d
pedro d
User level: Community Specialist

Apr 5, 2014 9:10 AM in response to Toack

Hello there, Toack.


The following Knowledge Base article provides some great recommendations for troubleshooting issues with display:


Apple computers: Troubleshooting issues with video on internal or external displays

http://support.apple.com/kb/ht1573


No video or no signal, image distortion, "snow," or flickering

Check connections

When using an external display be sure to check the following:

  1. If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
  2. Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
  3. Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
  4. Try unplugging the video adapter or cable and then plug it back in.
  5. If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.

    Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.

  6. If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).
Reset the system
You can reset the Mac's parameter RAM and SMC.Reset the resolutionStart by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:
  1. Start up in Safe Mode.
  2. From the Apple () menu, choose System Preferences.
  3. Choose Displaysfrom the View menu to open the preferences pane.
  4. Select any resolution and refresh rate that your display supports.
  5. Restart your computer.


Thanks for reaching out to Apple Support Communities.


Cheers,

Pedro.

Reply
User profile for user: Toack
Toack Author
User level: Level 1
0 points

Apr 8, 2014 5:27 PM in response to pedro d

Thank you, resetting the NVRAM and the SMC helped with the monitor problem, at least for the time being, I'll keep stress testing from time to time during a week.


Actually, during the five days I managed to solve almost all my problems with mavericks except for the mouse acceleration. At least I can work 95% normally again.


Thank you again.

Reply

Second monitor lost

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