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Mac mini 2014 won't wake monitor via HDMI

Hello! I just purchased a brand new Mac mini (Late 2014), 2.6 GHz Intel Core i5 with Intel Iris 1536 MB, running Yosemite 10.10. It's connected to an Acer K242HL monitor via HDMI.


The monitor connection works correctly (I'm typing this on it now), until I attempt to wake the monitor from sleep. The Mac itself clearly wakes when I click the mouse (the white light stops blinking and stays solid), but the monitor does not respond. I have to power off/on the monitor to get it to wake up.


I have previously used the monitor with a MacBook Pro (via HDMI) in clamshell mode and had no problems with it waking up straight away, so I'm assuming the problem lies with the Mac mini.


Can anyone offer any advice about this? It's very annoying not being able to quickly wake up the display when I need to use the Mac.


Thanks!

Mac mini, OS X Yosemite (10.10)

Posted on Oct 25, 2014 3:35 AM

Reply
300 replies

Jan 10, 2015 7:20 PM in response to er1c15

My experience so far:


MM HDMI > Monitor HDMI = Sleep/Wake Issue

MM Mini DP > Monitor Mini DP = Not sure. My display does not have a DP port

MM Mini DP > Monitor VGA =Sleep/Wake Issue (Also not working for me)

MM Mini DP > Monitor DVI = ?

MM Mini DP > Monitor HDMI = Sleep/Wake Issue


I would like to add that for some reason

MM HDMI > HDMI to DVI cable = Working

at least in my setup.

Jan 11, 2015 5:24 AM in response to er1c15

Posted here -- Monitor Doesn't Recognize Mac Mini After It Goes To Sleep


badladr Been struggling with this issue for the last few weeks also, but finally got it working.


Setup:

Mac Mini (late 2014) 2.6GHz, 16GB RAM 1600MHz

Display: HP Envy 24 IPS


When Mac mini is asleep, pressing the right 'Shift' key wakes both the Mac and monitor up.


Pressing any other key, or moving the mouse only wakes the Mac and the monitor would remain in sleep mode.


Hope this helps someone, as this issue is truly a pain.

Since that thread was marked as solved for the OP I thought there might be a chance that you folks might miss badladr's post. It's worth a try.

Jan 11, 2015 6:10 AM in response to ishrugged

I can say after a couple of weeks of using this, that the mini will repeatedly wake up with HDMI >DVI cable on HDMI port to monitor DVI port. That is a 100% solution for me. My problem is that I have 2 monitors on the mini and the first one wakes up all the time, the second one is highly inconsistent.


There are times when 2 monitors wake up, but that is a combination of time and using the KB. For some reason the mouse is 0% effective, it will only wake up the main monitor, not the second monitor.


On Monday morning I will have a good long block of time. I am going to set the monitor power down to 1 minute so that I can try the full matrix of solutions by monitor and cable and chart them all so that I can call into support with all of the options and what works/doesn't. To me, even though I have found a partial solution, this is still a flawed product.

Jan 11, 2015 8:20 AM in response to ishrugged

Waking the Mac Mini via Right Shift does not wake up my Samsung SynchMaster 2220wm, which is connected to the MM HDMI port via a DVI to HDMI cable. I have two other monitors that work with that setup, but the Samsung is the preferred monitor. I have ordered a DVI to mini display port adapter, which the rep at B&H told me is compatible with the ThunderBolt 2 port. Once I receive and install it, I'll report back if it resolves my particular issue.

Jan 11, 2015 8:37 AM in response to Brotherseamus

MY SOLUTION (that is not particularly energy conscious):


Having same trouble as everyone else with HDMI to HDMI connection or thunderbolt to HDMI connection from 2014 mac mini to an HP monitor. Not a great solution (but an effective temporary one for me) because of the energy drain of a constantly 'on' monitor: I have found that by turning off "power saver" within the menu of the HP MONITOR ITSELF (accessed via a menu button on the monitor itself), I can wake up the mac mini and "wake up" the monitor immediately by touching any key on keyboard or by clicking the mouse. (This just means even though the monitor is actually fully "on" already, the screen, which is blank when mac mini is asleep-except for an ugly box that floats around the screen saying NO VIDEO INPUT, will then immediately display the desktop or login page.) To save energy, you would need to manually turn off the monitor when finished using the computer. When you then turn the monitor back on later, just press any key on keyboard or click mouse.

Jan 12, 2015 11:12 AM in response to er1c15

Called apple support and got a case # 729531533.


The guy went to talk to engineering and they do acknowledge that this is an issue that they are seeing, but it is also an issue that they do not have a fix for at this point.


This morning I tore my system apart to try every configuration possible. There is not a single configuration that will work with 2 monitors. The best is HDMI>DVI on the main monitor and Mini DP>DVI on the second monitor (technically Mini DP > HDMI connected to an HDMI>DVI cable.)


The only solution is to set the system up so that the monitors never turn off and then use a screensaver. Unfortunately when I tested the screen saver that they recommended "message", I saw the power go from the normal 19W to 20W with the screensaver on. How can a black screensaver draw more power?

Jan 13, 2015 7:30 AM in response to AustinBike

Hi AustinBike,


When calling Apple- did they ask you to 'capture data' or anything similar? It's just that I have had to do several things every time they call me back. Tomorrow is going to be at least another hour appointment on the phone with them, as they want me to test my set up and capture data again (with a 'clean system' this time). I have spent so long on this now...I just want them to acknowledge it is not a problem exclusive to me. But nevertheless, it falls on deaf ears and I am asked to do all this stuff. I know it won't work and tell them this! Really had enough- so many hours on the phone. I find it interesting how and why they have at least acknowledged the wide spread problem with you. How did the call end...just that they didn't have a fix yet and would get back to you?


Thanks,


Sarah

Jan 13, 2015 8:08 AM in response to Sarahlrobo

I've been in technology for 20+ years, spent at least 2/3 of it at major OEMs similar to apple. I even helped work with some support queues/logistics when I was at one of them, so I understand how the process works.


This is no poor reflection on Apple, this is how the industry works. 9 out of 10 people calling in for support probably have stupid user-induced errors or simple things that can be corrected. (I once had a woman who worked for me call the internal support desk because her laptop was no longer charging. I heard her berate the internal call desk guy as he asked her to go through all of the steps. She said "I'm an electrical engineer..." Then she realized that while the adapter was plugged into the wall, the plug into the power brick had fallen out....) There is a reason that they go through all of those steps with people.


What I did when I called was follow this set of statements:


1. Explain exactly what is happening. I did not just say my monitor wasn't waking up, I went through a detailed description. I mention at this point that I know there is an issue with the Mini and HDMI waking up monitors. I explain to him that I do not expect a fix, I am just trying to log this for future reference once they have a fix identified.


2. I took them through all of the trouble shooting. I mentioned that I have been working on this for weeks, so that he knows that this is not the first time I have experienced this and he is not the first stop in the solution, he is the last. I went into detail about all the things I have tried. Different cables, different computers, different APPLE computers, to verify that:

A. the monitor is capable of being woken up

B. The cable is capable of carrying the signal to wake the monitor up

C. The mini is capable of waking up the monitor is some situations.

This allows them to narrow down the potential problems. In addition, it shows them that I understand what I am talking about, so they can skip some the the typical user-induced questions.


3. I highlighted this thread and said I had a dozen case #'s if he wanted them for reference. This says "look guys, you have a problem and I am not an isolated incident." This gets me put on hold while he goes to check with engineering. Sure enough, the answer is we are working on this, don't have a fix yet. But I have a case # in there so I am in the queue when they come up with a solution.


Remain calm and cordial, you're all on the same team here, getting angry is not going to fix the situation and threats don't speed up the process.


At the end of the day, Apple is either going to need to fix this in firmware/BIOS, fix it in software (Yosemite update) or replace the unit. If it is the first 2, then because I follow the updates carefully, I will deal with it myself. If it is the third, I want my system registered so that I can follow up for getting a replacement once they finally give in. The problem is, similar to the problems with nVidia GPUs, this could be years away.


Also, I highly recommend keeping a very detailed call log. Time, who you spoke to, how long you sat on hold, what they told you and what you did. I have ongoing issues with my ISP and when I say "this is a problem that started in August of 2013 and you've rolled trucks to my house more than 25 times" it changes the conversation completely. If they tell you to hang up and try something you can say "on January 7th you guys told me that and it didn't work". It puts you in control of the situation. I hate to say it but call centers are managed by metrics, for some it is call handle time, so "try this and call back" helps the agent's metrics. Not saying apple is like this, but once you understand how call centers work, I can start to see how to deal with them.

Jan 13, 2015 9:28 AM in response to AustinBike

Thanks so much for your time and detailed reply, AustinBike. Very useful and much appreciated. I will relay some of the information and tactics you have enclosed in my next call- tomorrow. I am not angry with my Apple rep, he has a great manner and relays all the info to the engineers, calls me back promptly etc and is trying his best (I can sense he can only do so much without referring to other depts etc). But I can't deny I am frustrated...the bottom line is I have paid just under £900+ for my Mini and it's not meeting a basic expectation. Fair enough that things go wrong, but to then be involved in call after call amounting to hours; it's not good enough. I will continue to cooperate with Apple and do their testing. But I think I will have to call it a day after tomorrows call/ session. I feel it should be Apples time used to test the products now, not mine. Instead, like you, I am waiting in line if they have a fix for the solution...be it years!


Thanks again and all my best 🙂

Jan 13, 2015 8:39 PM in response to edtguy

Follow-up: I received my dvi to mini display port adapter today from B&H, but this does not solve the issue with my Samsung SyncMaster 2220wm: waking the mini still does not wake the monitor, the same issue as when I connected it with a dvi to hdmi cable.

Here's an observation though: when the monitor is on, it has a constant blue light. When it goes to sleep, that light flashes. When I select to shut down the mini, the monitor goes to sleep the same as it does when the mini goes to sleep, and when I press the button on the back of the mini to power it back up, it wakes up the monitor. Therefore, the mini is capable of sending a signal to the monitor to wake it up; it simply does not send that signal when it is brought out of sleep, yes? I will follow up on my existing case with this same information and observation.

Mac mini 2014 won't wake monitor via HDMI

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