Mac Mini (2018) Serious Monitor Issue

LQkkeN

macrumors newbie
Original poster
Nov 12, 2018
6
1
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 :(
 

rmdeluca

macrumors 6502
Oct 30, 2018
250
392
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 :(
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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youslippin

macrumors member
Sep 12, 2011
82
26
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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LQkkeN

macrumors newbie
Original poster
Nov 12, 2018
6
1
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?
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!
 

MacWorld78

macrumors 6502
Jul 25, 2012
426
181
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.
 

rmdeluca

macrumors 6502
Oct 30, 2018
250
392
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.
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.
 

LQkkeN

macrumors newbie
Original poster
Nov 12, 2018
6
1
@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.
I am connecting to Displayport through such a cable, as the Mac Mini does not have a Displayport.

Thanks for your suggestions!
 

LQkkeN

macrumors newbie
Original poster
Nov 12, 2018
6
1
Dumb question, but... have you tried a DIFFERENT display?
I have tried it with another display, yes. It worked just fine.

Not a dumb question :)
 

dlemmon

macrumors regular
Jun 14, 2009
147
33
denver, co
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
 

existe

macrumors member
May 11, 2009
52
9
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.
 

MartinBass7750

macrumors newbie
Jan 14, 2019
7
0
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:

WilliamG

macrumors G3
Mar 29, 2008
8,990
2,401
Seattle
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.
I’d return the mini. There are way too many issues with it.
 

MartinBass7750

macrumors newbie
Jan 14, 2019
7
0
I’d return the mini. There are way too many issues with it.
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?
 

WilliamG

macrumors G3
Mar 29, 2008
8,990
2,401
Seattle
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?
I’ll let you know when I find it.
 

Fishrrman

macrumors P6
Feb 20, 2009
17,216
5,558
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.
 

MartinBass7750

macrumors newbie
Jan 14, 2019
7
0
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.
[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.
 

F-Train

macrumors 65816
Apr 22, 2015
1,457
997
NYC & Newfoundland
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:

MartinBass7750

macrumors newbie
Jan 14, 2019
7
0
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.
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%)
 

enri1357

macrumors member
Jul 31, 2016
65
30
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.
This is the only way i can see the Apple boot logo with my LG 27uk650
 

Momof9

macrumors 6502
Aug 22, 2018
286
77
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.
 

MartinBass7750

macrumors newbie
Jan 14, 2019
7
0
Success.
Dell monitor on hdmi, acer H277HK monitor on thunderbolt with thunderbolt to display port cable.
Thanks for the suggestion!