Issues waking when connected to external display

Question

pitsch-m OP

Created Jun ’15

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I recall having similar issues with graphics drivers and external displays with the Yosemite Beta.

Is anyone else experiencing this? Or have any suggestions on isolating the cause?

Thanks everyone.

Detail:

When the display is put to sleep when connected to external (both with clamshell closed and open) the Mac will not wake. It continues to provide power through USB devices.

Unplugging display connection and opening/closing lid has no effect.

Hard reset by holding down power button results in a restart which more resembles a 'resume' rather than a full restart.

Macbook Pro with Retina Late 2014 Model

16 GB 1600 MHz DDR3

NVIDIA GeForce GT 750M 2048 MB

Display: LG 34UC97 Ultrawide Curved IPS Monitor

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Answer 1

sjlee OP

Jun ’15

I believe what I'm experiencing is the same as this issue (https://forums.developer.apple.com/message/13675#13675).

I have a Dell P2415Q external monitor, and the external monitor does not come back on what I wake the computer from sleep. What I found, however, is that the external monitor does come back on eventually, and that the time it takes for that to happen is remarkably constant. It takes exactly 110 seconds (1 minute and 50 seconds) in my case.

When I take a look at the system.log using the console, I see the following whenever the external monitor comes back on eventually:

6/21/15 7:13:33.000 PM kernel[0]: com_apple_driver_AppleUSBCardReaderSBC::setPowerState(0xa632c58f24ef9e3b, 0 -> 2) timed out after 100974 ms

Is that what you're seeing too?

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