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Mac Mini (2018) Serious Monitor Issue

MLM

MLM

macrumors member
Original poster
I just got the new Mac Mini (2018).

When connecting it to my Asus PG279Q monitor, the handshake between macOS and the monitor will often fail with the following log output:
Code: 
hidDeviceForLegacyDisplay: failed
DSHIDDeviceNewLegacy: failed
DSDeviceNew: Failed to create new HID or IIC device for displayID 0x1a49fb02
-[CBDisplayContainerMacOS setupInternalModules]: Failed to create display module for device ID 441056002
-[CBDisplayContainerMacOS start]: failed to start
-[BLControl updateDisplaySet:]_block_invoke: failed to start cotainer for display ID 441056002

The result is a black screen, sometimes with a cursor visible. The case is the same using both HDMI and Displayport.

I'm also seeing a lot of these:
Code: 
WindowServer [ERROR] - Attempting to get capabilities from capabilities with no devices

and these:
Code: 
com.apple.AmbientDisplayAgent Invalid display 0x1a490575

When using Displayport, I'm also seeing a lot of these:
Code: 
[IGFB][ERROR ] Link loss occurred on port 2
[IGFB][ERROR ] Recovering DP link (6)
[IGFB][INFO ] FB1: Complete modeset
[IGFB][ERROR ] FB1: Flip called without enabling VBL
[IGFB][INFO ] FB1: Restoring gamma

The case is the same in safe mode.
The case is the same in recovery mode.
The case is the same with a clean installation.

I'm about ready to return the Mac Mini. Please help 🙁
 
LQkkeN said:
I just got the new Mac Mini (2018).

When connecting it to my Asus PG279Q monitor, the handshake between macOS and the monitor will often fail with the following log output:
Code: 
hidDeviceForLegacyDisplay: failed
DSHIDDeviceNewLegacy: failed
DSDeviceNew: Failed to create new HID or IIC device for displayID 0x1a49fb02
-[CBDisplayContainerMacOS setupInternalModules]: Failed to create display module for device ID 441056002
-[CBDisplayContainerMacOS start]: failed to start
-[BLControl updateDisplaySet:]_block_invoke: failed to start cotainer for display ID 441056002

The result is a black screen, sometimes with a cursor visible. The case is the same using both HDMI and Displayport.

I'm also seeing a lot of these:
Code: 
WindowServer [ERROR] - Attempting to get capabilities from capabilities with no devices

and these:
Code: 
com.apple.AmbientDisplayAgent Invalid display 0x1a490575

When using Displayport, I'm also seeing a lot of these:
Code: 
[IGFB][ERROR ] Link loss occurred on port 2
[IGFB][ERROR ] Recovering DP link (6)
[IGFB][INFO ] FB1: Complete modeset
[IGFB][ERROR ] FB1: Flip called without enabling VBL
[IGFB][INFO ] FB1: Restoring gamma

The case is the same in safe mode.
The case is the same in recovery mode.
The case is the same with a clean installation.

I'm about ready to return the Mac Mini. Please help 🙁
Click to expand...

Hmmm. If I had to offer you a wild guess, perhaps the G-Sync hardware is confusing the capabilities probe?

Assuming you've done the obvious 1) make sure the monitor works properly on another machine 2) tested with different cables (which you pretty much did already by trying both HDMI and DP):

Can you enter the monitor's OSD/menu and turn off G-Sync completely? Can you turn off any other picture enhancements such as special black levels, ultra color yada yada yada? Are there any settings regarding DP version or compatibility?

If that doesn't work you might have to contact Asus, and I don't envy you at all.

The unfortunate thing is you can't even run an NVIDIA GPU externally right now in Mojave (without hacks) because Apple and NVIDIA seem to be having some type of disconnect w/r to certifying NVIDIA's latest web drivers.

Sorry :/
 
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I was experiencing something similar. I have dual displays running and 1 of my monitors would go blank for about 3 seconds. This would happen randomly every 10-30 mins or so. I was using a USB-C to HDMI adapter. I replaced that adapter with a USB-C dock which has an HDMI input and its been solid ever since
 
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Can you enter the monitor's OSD/menu and turn off G-Sync completely? Can you turn off any other picture enhancements such as special black levels, ultra color yada yada yada? Are there any settings regarding DP version or compatibility?
Click to expand...

G-Sync only works on the Displayport, as far as I’m aware. In any case, there are no options to turn it (or any other special feature) on/off. The monitor is quite simpel in this regard.

Thanks for your suggestions, though!
 
I'm not sure about this...

Look like your monitor is using the 165Hz refresh rate while Mac Mini accept only 60hz only.

  • Two displays with 4096x2304 resolution at 60Hz connected via Thunderbolt 3 plus one display with 4096x2160 resolution at 60Hz connected via HDMI 2.0
Or
  • One display with 5120x2880 resolution at 60Hz connected via Thunderbolt 3 plus one display with 4096x2160 resolution at 60Hz connected via HDMI 2.0
"Above Bullets point was copied from the apple website technical specification for the mac mini 2018"

Maybe you need to change from the 165hz to 60hz from the monitor's OSD/menu.
 
MacWorld78 said:
I'm not sure about this...

Look like your monitor is using the 165Hz refresh rate while Mac Mini accept only 60hz only.

  • Two displays with 4096x2304 resolution at 60Hz connected via Thunderbolt 3 plus one display with 4096x2160 resolution at 60Hz connected via HDMI 2.0
Or
  • One display with 5120x2880 resolution at 60Hz connected via Thunderbolt 3 plus one display with 4096x2160 resolution at 60Hz connected via HDMI 2.0
"Above Bullets point was copied from the apple website technical specification for the mac mini 2018"

Maybe you need to change from the 165hz to 60hz from the monitor's OSD/menu.
Click to expand...

Unfortunately, it's a little more complicated than that.

The UHD 630 in the 2018 Mini should be able to do 1080p @ 120Hz, but I've not personally verified yet that it does in OSX.

According to the specs for his monitor, its DisplayPort can accept up to 165Hz, but the HDMI port is limited to 60Hz. So in theory the HDMI port should just work. My suspicion though is that when the monitor's capabilities are being enumerated by the UHD 630 driver in OSX, the driver is getting confused and erroring out.

Thus it might be worth submitting a bug report to Asus/Apple in the hopes this will get fixed someday.

I am curious to see if OP has any success with using a USB-C to DP cable to connect his monitor.
 
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@MacWorld78, @rmdeluca

It is actually capable of outputting both 1440p@165Hz through Displayport and 1440p@60Hz through HDMI at the same time. This surprised me as well, but I guess the Intel 630 limit is in terms of bandwidth from a single port, rather than actual horsepower. This is to say, the bandwidth cap is 2160p@60Hz, but it might even be able to run multiple of those.
I am curious to see if OP has any success with using a USB-C to DP cable to connect his monitor.
Click to expand...

I am connecting to Displayport through such a cable, as the Mac Mini does not have a Displayport.

Thanks for your suggestions!
 
Dumb question, but... have you tried a DIFFERENT display?
Click to expand...
I have tried it with another display, yes. It worked just fine.

Not a dumb question 🙂
 
I’m having a display problem as well. It works fine, but when I shutdown and start it back my up, my monitor says no signal. Not sure what’s going on... very annoying. After several hard reboots (cringe) it goes to the boot recovery assistant and then I can see again. 4K monitor using hdmi
 
Having exact same problems with (2) different monitors. One Dell other Asus, seems to struggle to come out of sleep, have to unplug HDMI and plug back in to get it to work, not always 100%. Will flicker on for a second and then go black again. Have replaced HDMI cable as well. Going to try USB-C to DP to see if it improves.
 
I have exactly the same issue with an acer H277HK.
Boots half way through loading bar, speakers in monitor crackle then screen goes blank. Acer
aren’t interested.
Reported on apple feedback.
Guess I have to buy a different monitor,
Is anyone using the LG 27UD59P?
That’s the one I’m thinking of buying.
 
Last edited:
MartinBass7750 said:
I have exactly the same issue with an average H277HK.
Boots half way through loading bar, speakers in monitor crackle then screen goes blank.
Average aren’t interested.
Reported on apple feedback.
Guess I have to buy a different monitor,
Is anyone using the LG 27UD59P?
That’s the one I’m thinking of buying.
Click to expand...

I’d return the mini. There are way too many issues with it.
 
WilliamG said:
I’d return the mini. There are way too many issues with it.
Click to expand...

really? Is it that bad?
[doublepost=1547542181][/doublepost]I want a new faster mac. My macbook is getting old and slow, and the mini seems a great way to get decent performance for a not too bad price.
What other options are there?
 
MartinBass7750 said:
really? Is it that bad?
[doublepost=1547542181][/doublepost]I want a new faster mac. My macbook is getting old and slow, and the mini seems a great way to get decent performance for a not too bad price.
What other options are there?
Click to expand...

I’ll let you know when I find it.
 
Martin wrote:
"I have exactly the same issue with an acer H277HK.
Boots half way through loading bar, speakers in monitor crackle then screen goes blank.
Average aren’t interested.
Reported on apple feedback.
Guess I have to buy a different monitor,
Is anyone using the LG 27UD59P?
That’s the one I’m thinking of buying."

Question:
What kind of cable are you using to connect?
For a new Mini, you'd want USB-c (Mac end) to displayport (monitor end).

The only LG product I've owned was a tv that failed within 2 years and then was impossible to repair (couldn't get parts). I'll never buy one of their display products again.
 
Fishrrman said:
Martin wrote:
"I have exactly the same issue with an acer H277HK.
Boots half way through loading bar, speakers in monitor crackle then screen goes blank.
Average aren’t interested.
Reported on apple feedback.
Guess I have to buy a different monitor,
Is anyone using the LG 27UD59P?
That’s the one I’m thinking of buying."

Question:
What kind of cable are you using to connect?
For a new Mini, you'd want USB-c (Mac end) to displayport (monitor end).

The only LG product I've owned was a tv that failed within 2 years and then was impossible to repair (couldn't get parts). I'll never buy one of their display products again.
Click to expand...
[doublepost=1547566868][/doublepost]I was using hdmi to hdmi. The cable came with the acer monitor and all worked fine at 4K with my windoze pc.
I have borrowed a dell monitor from work which is running fine, so sorted for the moment.
Maybe I’ll order a usb-c to display port lead to see if I can get the acer working.
 
I’ve used my mini with both Acer and Asus monitors and with both HDMI and DisplayPort cables, directly and via an external GPU, and have had no problems.

For me, the trick is to have the monitor, and now the eGPU as well, powered on before the mini is powered on. Doing it this way, I have had no issues at all. I have had signal issues if the eGPU or monitor are turned on after the mini is powered on.
 
Last edited:
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F-Train said:
I’ve used my mini with both Acer and Asus monitors and with both HDMI and DisplayPort cables, directly and via an external GPU, and have had no problems.

For me, the trick is to have the monitor, and now the eGPU as well, powered on before the mini is powered on. Doing it this way, I have had no issues at all. I have had signal issues if the eGPU or monitor are turned on after the mini is powered on.
Click to expand...

Hi
My Acer monitor was powered on before I powered on the mac mini.
I was connecting with HDMI.
I've ordered a thunderbolt to display port cable to see if that works.

I have tested the mac mini with several monitors at work - 2 x dell, 2 x aoc, 1 x acer - and all worked fine on hdmi.
It's just the acer h277hk that won't work past half way through boot (loading bar hits 50%)
 
F-Train said:
I’ve used my mini with both Acer and Asus monitors and with both HDMI and DisplayPort cables, directly and via an external GPU, and have had no problems.

For me, the trick is to have the monitor, and now the eGPU as well, powered on before the mini is powered on. Doing it this way, I have had no issues at all. I have had signal issues if the eGPU or monitor are turned on after the mini is powered on.
Click to expand...
This is the only way i can see the Apple boot logo with my LG 27uk650
 
Mine was working fine for a little while today....

I have a new Samsung UE590 4k (HDMI to HDMI) and an old HP 23es (HDMI to USB C). I decided to add the HP to my mini today. I played a bit with calibrating and getting them to look similar in color. Then all of a sudden the Samsung turned off. I played with it and could not get it to connect. Thought the monitor went bad, tried a different HDMI cable - no luck. BUT the HP was still working. So I decided to try switching cords. Well now the Samsung is working with USBC but not the HP.... So I am thinking it might be my HDMI port on my 2018 i5 Mac mini.

So I unplugged the HDMI while I was writing this, and still not working. HDMI was working fine until today.
 
Success.
Dell monitor on hdmi, acer H277HK monitor on thunderbolt with thunderbolt to display port cable.
Thanks for the suggestion!
 
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