TheGuyintheProjectionBooth

Q: Multiple Montiors Fail after Wake from Sleep . . .

Throughout the years with OSX 10.x there has been issues with monitors that have popped up that could easily be fixed with clicking on the “Detect Displays” button. That button is gone and so is any easy way of fixing results of any bug. Over the past couple of weeks issues about monitors are happening at every wake from sleep. I am running several OS’s and restarting in another that has more stability where there is no issue, then rebooting back to 10.10.5 the monitors “usually” snap into “proper” resolution. Most of the time. On average I have to spend 1-2 hours per happening trying to resolve this. Recently, shutting down the machine, waiting awhile, then restarting will put everything as it should be. Most of the time.

 

Problem: At initial, first time of the day startup all monitors (2) are in proper position, resolution and appearance. Then after anytime during the day if the machine goes to sleep, after waking from sleep either the main monitor will not wake and the system goes into one monitor mode with the secondary monitor as main and primary; or the main monitor will come up as it should, but the secondary monitor goes into the wrong resolution with no proper resolution listing or no selection at all in the control panel. Swapping plugs on the graphics card does not really do anything. This has become a multiple time a day issue.

 

Hardware Specs:

  Model Name:    Mac Pro

  Model Identifier:    MacPro3,1

  Processor Name:    Quad-Core Intel Xeon

  Processor Speed:    2.8 GHz

  Number of Processors:    2

  Total Number of Cores:    8

  L2 Cache (per Processor):    12 MB

  Memory:    8 GB

  Bus Speed:    1.6 GHz

  Boot ROM Version:    MP31.006C.B05

  SMC Version (system):    1.25f4

 

ATI Radeon HD 2600 XT:

  Chipset Model:    ATI Radeon HD 2600

  Type:    GPU

  Bus:    PCIe

  Slot:    Slot-1

  PCIe Lane Width:    x16

  VRAM (Total):    256 MB

  Vendor:    ATI (0x1002)

  Device ID:    0x9588

  Revision ID:    0x0000

  ROM Revision:    113-B1480A-252

  EFI Driver Version:    01.00.252

 

Displays:

  Samsung S22B150 (Secondary):

  Resolution:    1920 x 1080 @ 60 Hz

  Pixel Depth:    32-Bit Color (ARGB8888)

  Mirror:    Off

  Online:    Yes

  Rotation:    Supported

 

  Samsung SyncMaster 2220WM (Primary):

  Resolution:    1680 x 1050 @ 60 Hz

  Pixel Depth:    32-Bit Color (ARGB8888)

  Main Display:    Yes

  Mirror:    Off

  Online:    Yes

  Rotation:    Supported

Posted on Jun 2, 2016 1:47 PM

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Q: Multiple Montiors Fail after Wake from Sleep . . .

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