Mac mini 2014 won't wake monitor via HDMI

Yes, there is a sleep/wake signal that is sent to the monitor from video ports. It is unclear to me what the issue is because I do not have a trace analyzer between the monitor and the mini to be able to see what signal is/isn't being passed between the two.

But the fact that there are combinations (HDMI port on mini to DVI on monitor) that work 100% of the time tells me that Apple should be able to figure out what it going on. The fact that the mini DisplayPort can 100% of the time shut down the monitor is a data point as well. But I believe that the monitor senses a lack of input and shuts itself down, I do not believe that there is a "shutdown" signal being sent. I guess I need to watch it go to sleep to see if it gets a "no signal" message on the monitor. I do not recall seeing one.

AFAIK the monitor input senses the presence or absence of signal at the input (any signal, even bad ones) and wakes up accordingly. I do not think that there is a specific 'wake up' packet.

I took my Mac back into the store today and they tested it for me. They had a Sony TV and used my Mac HDMI cable. We waited for automatic sleep mode to kick in, even waited some more, then tried to wake it up. It woke up perfectly!! So what is happening?! We did it twice and both times it woke up (with only a delay of a few seconds). Back to my Philips at home and the same old problem persists. Baffled.

Your 'old' Philips, what HDMI version does it support?

Read this:

Several versions of HDMI have been developed and deployed since initial release of the technology but all use the same cable and connector. Other than improved audio and video capacity, performance, resolution and color spaces, newer versions have optional advanced features such as 3D, Ethernet data connection, and CEC (Consumer Electronics Control) extensions.

So, which version(s) do you have, the Mac supports 2.0 (the latest) 1.4 is common, earlier than that will be a bit flaky

versions are 1.0 1.1 1.2 1.3 1.4 and 2.0

Like I've been saying in several posts. I have a new (iris) mini connected to a 60" sony bravia tv. It didn't at first but after one of the OS updates it always connects now. Faster if I wake the computer before I turn on the TV. That leads me to believe that there is some other issue with the mini for other connectios, monitor or TV types. This is why it might be puzzling Apple.

I guess Sony issued a 2.0 firmware update for my tv in 2013.

Csound1, it is a new Philips monitor (234E5Q) but the same 'old' problem 🙂 i.e...it doesn't wake the monitor up. I'm not entirely sure of what version of HDMI it has, but presume between 1.4 and 2.0 as it was manufactured in June '14. Thanks for this tip however, maybe if it is 1.4 even, this is the problem.

1.4 or 2.0 sounds about right, so that's not it.

I called Apple Support (mainly to to just open a case number) about the color distortion on my NEC VGA monitor when I wake my 2014 Mac Mini from sleep (VGA to Mini Display Port). Two days ago, it wouldn't awake from sleep at all but since has returned to awaking with color distortion. The case number is: 732232804. The senior advisor implied that she hadn't heard of this issue before but I mentioned the Apple Community threads documenting it and that there were cases open for it. They had me do some trouble shooting such as resetting the PRAM with no success. Interestingly, when she had me do certain commands after the startup chime (recovery partition=Comm+R, internet recovery=Comm+Opt+R, and Apple Diagnostics=D key), nothing came up on the screen or it incorrectly went to the login screen. Has anyone else with the sleep/wake issue experienced this? The advisor recommended that I talk to NEC to see if there was a driver update and take the Mini into the repair shop for further hardware testing. I spoke to NEC (even though I don't believe the problem lies with the monitor) who said they don't do driver updates for Macs, only Windows. The reason being he stated was that Apple creates the driver updates themselves and provides them in their software updates. I'll be taking the Mini into the repair shop Monday particularly with these startup commands not executing. I emailed the advisor back repeating what NEC said and provided links to the related forum threads and open case numbers.

While it did seem odd that they would ask you to go to NEC for a driver, this is part of the "point the finger, blame the other guy" scenario that most manufacturers will have when they deal with a third party product. It would be interesting to see if someone with 1 or 2 apple monitors attached has experienced these problems. Something tells me that with 2 apple monitors attached everything works.

Conspiracy alert! Is this a way for Apple to sway people into buying Apple displays or other displays that licensed thunderbolt tech? Haha But seriously though, this needs to be resolved so I can re-purchase my Mini!

It has been over week since I spoke to the senior Apple adviser. He had said they would get back to me in a couple of days, but still no word back after taking my system data. 😕. Problem remains unsolved

Be proactive, call them. This is the only way to get the situation resolved.

I have also exactly the same problem with my brand new mac mini (late 2014, 16GB, 2TB Fusiondrive with Yosemite 10.10.1) and Sony Bravia 40 LCD television. They are connected via HDMI.

Any solutions for the problem?

Thanks!

I called to follow up and be "proactive" and still no resolution in sight. Quite dissapointing..

Same issue with Acer G246hylbmjj