watakoola
macrumors 6502
Yes. I can run it either direct from the mini, or via my eGPU. Everything improved (for me) with Big Sur, and then with Monterey.
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Mac Mini 2018 HDMI failes after OS upgrade / patch
- Thread starter tstimper
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Fishrrman
macrumors Nehalem
trevor asks:
"Is there anyone out there with a 2018 Mac mini running Monterey that IS able to use the HDMI port?"
Yes.
I do.
I have a 2018 Mac Mini. I normally use Mojave with it, but I do keep an external SSD that has a copy of Monterey on it.
I have a Viewsonic VX2770Smh-LED 27" (1080p) display connected via HDMI (Mini end) to DVI (display end) connection.
I've noticed (during Mojave as well as with Monterey) that is ALWAYS "goes black" for a moment during the bootup process, BUT, it ALWAYS "comes back on".
No problems, it's just the way it goes. It's been working like this for three years now.
Having said that, before I went with HDMI-DVI, I was having some problems with HDMI to HDMI. Now and then, the display would go dark... and STAY that way.
Switching to HDMI-DVI cured that (see above).
And having said THAT, it's worth noting that the OP started this thread 'way back in January 2020.
Back then, his complaint was that although he had the display working one way, it did not work another way.
My advice to him at the time was to "use the connection method that worked" and ignore the one that didn't (see reply 7 'way back in this thread).
He seemed to refuse, and kept complaining that Apple should fix this so that the setup he had (with his particular display and connecting cables) would work.
As I predicted, that never happened.
There will be "no further fixes" for the 2018 Mac Mini, insofar as video is concerned.
It is what it is.
"Is there anyone out there with a 2018 Mac mini running Monterey that IS able to use the HDMI port?"
Yes.
I do.
I have a 2018 Mac Mini. I normally use Mojave with it, but I do keep an external SSD that has a copy of Monterey on it.
I have a Viewsonic VX2770Smh-LED 27" (1080p) display connected via HDMI (Mini end) to DVI (display end) connection.
I've noticed (during Mojave as well as with Monterey) that is ALWAYS "goes black" for a moment during the bootup process, BUT, it ALWAYS "comes back on".
No problems, it's just the way it goes. It's been working like this for three years now.
Having said that, before I went with HDMI-DVI, I was having some problems with HDMI to HDMI. Now and then, the display would go dark... and STAY that way.
Switching to HDMI-DVI cured that (see above).
And having said THAT, it's worth noting that the OP started this thread 'way back in January 2020.
Back then, his complaint was that although he had the display working one way, it did not work another way.
My advice to him at the time was to "use the connection method that worked" and ignore the one that didn't (see reply 7 'way back in this thread).
He seemed to refuse, and kept complaining that Apple should fix this so that the setup he had (with his particular display and connecting cables) would work.
As I predicted, that never happened.
There will be "no further fixes" for the 2018 Mac Mini, insofar as video is concerned.
It is what it is.
harriska2
macrumors 68020
I use a straight HDMI to HDMI cable on my 2018 mini to 40” Samsung 4K. I use it scaled at 1.5x. Monterey has vastly improved stability. Used to have 2-3 second blackouts 2 or so times a week. I can’t remember the last time it did that. I use a remote to turn the monitor on and off. It‘s a pretty high quality TV with 4:4:4 chroma.
jvandemerwe
macrumors newbie
I have a Mac Mini 2018 and have 2 Anker USB-C to HDMI cables connected to Dell 27 inch 4K displays. The third display is also a Dell 27 inch 4K display, but connected to the HDMI connector of the Mac Mini. On the Mac Mini I have Monterey (12.4 at this time) installed.
All displays were working at first, but after I put the Mac Mini to sleep, once started up again, the HDMI connected display didn't turn up again. The Dell showed "no HDMI cable connected" on the HDMI connected display. After switching some cables and turning it off and on again, I only knew that all cables were OK, just the Mac Mini HDMI didn't respond.
Long story short, I shutted down the Mac Mini. I disconnected the Anker connected USB-C to HDMI devices. Just left the HDMI connected device. Turned it on again and the display showed up again. I connected, without shutting it off again, the Anker cabled devices and all 3 displays were working again.
Strange thing was though that the Dell display settings of the HDMI connected display were all back to default. I didn't reset it when trying.
Really hope this helps someone.
All displays were working at first, but after I put the Mac Mini to sleep, once started up again, the HDMI connected display didn't turn up again. The Dell showed "no HDMI cable connected" on the HDMI connected display. After switching some cables and turning it off and on again, I only knew that all cables were OK, just the Mac Mini HDMI didn't respond.
Long story short, I shutted down the Mac Mini. I disconnected the Anker connected USB-C to HDMI devices. Just left the HDMI connected device. Turned it on again and the display showed up again. I connected, without shutting it off again, the Anker cabled devices and all 3 displays were working again.
Strange thing was though that the Dell display settings of the HDMI connected display were all back to default. I didn't reset it when trying.
Really hope this helps someone.
Attachments
Back again:
Newest Monterey updates have seemed to *sort of fix* my 2018 Mac Mini. As well, Apple kept the Intel mini in the product line for now. So, hopefully the engineers will continue to fix the problem.
As of now:
1) acer 4k monitor connected to USB-C adapter that does not work at all on start up and randomly glitches out - turns on/off, strange colors, etc.
2) Samsung TV that seems to work fine now when using HDMI port (see my previous lengthy post that details my problems if you’d like). I boot computer using my TV as the axed monitor will not work until the OS has had password entered.
Changing my displays from external monitor to mirror is such a hassle. I wish I could lock the settings or something. Everytime I switch up these settings - the resolution changes.
I bought a new desk and now my external hard drives don’t sit near my Mac mini. This has drastically improved my display experience or maybe I am trippin out. I sincerely believe my 12tb mechanical HD may have somehow been messing with my Mac mini’s graphics card. All electronics are hooked up using a power cleaner.
It’s terrible to say this but I will probably be going back to windows or build a Linux rig for my pro audio and content creation when this Mac mini is done. Customer service with Apple on the phone was terrible at best.
Prior to this display experience issue - I loved how well my apple products would work together and how fast I could be creative on them without worry. This mantra seems to have changed at apple.
I spent $4200 CND on a computer that put me through hell. Hopefully someone at apple reads this.
Newest Monterey updates have seemed to *sort of fix* my 2018 Mac Mini. As well, Apple kept the Intel mini in the product line for now. So, hopefully the engineers will continue to fix the problem.
As of now:
1) acer 4k monitor connected to USB-C adapter that does not work at all on start up and randomly glitches out - turns on/off, strange colors, etc.
2) Samsung TV that seems to work fine now when using HDMI port (see my previous lengthy post that details my problems if you’d like). I boot computer using my TV as the axed monitor will not work until the OS has had password entered.
Changing my displays from external monitor to mirror is such a hassle. I wish I could lock the settings or something. Everytime I switch up these settings - the resolution changes.
I bought a new desk and now my external hard drives don’t sit near my Mac mini. This has drastically improved my display experience or maybe I am trippin out. I sincerely believe my 12tb mechanical HD may have somehow been messing with my Mac mini’s graphics card. All electronics are hooked up using a power cleaner.
It’s terrible to say this but I will probably be going back to windows or build a Linux rig for my pro audio and content creation when this Mac mini is done. Customer service with Apple on the phone was terrible at best.
Prior to this display experience issue - I loved how well my apple products would work together and how fast I could be creative on them without worry. This mantra seems to have changed at apple.
I spent $4200 CND on a computer that put me through hell. Hopefully someone at apple reads this.
I did, HDMI still not working. After a long long period of being very disappointed in Apple of the fact that the HDMI port isn't working anymore in the Catalina afterlife, Today I reflected upon Fishrrman's words:
And that's the truth: the Apple Mac Mini R&D teams already long long forgot us with our HMDI-port issue. The HDMI port will never work properly on a 2018 version in new OS'es.. it is what it is. Period.
I bought a 80 euro (= probably also dollars in today's currency) Satechi multiport USB-C adapter that has one 4k HDMI port, one usb-c port and two usb 3.0 ports. Plugged it in; it works. I would advise everyone with this issue to get over the feeling of injustice and use the USB-C ports for your monitors.
Did you try my fix? I can't say it will solve your HDMI problem but it fixed the HDMI issue I had on my 2018 Mini.
I just tried friend, thanks for the check! ...but my HDMI port is gone. And I'm accepting it.
Arubalube
macrumors newbie
This thing? https://www.apple.com/uk/shop/product/HMYE2ZM/A/satechi-aluminium-usb-c-multiport-pro-adapter
Presumably a good-quality HDMI ⟷ USB-C cable, would be cheaper and as effective. I've was considering this Anker cable https://www.amazon.co.uk/gp/product/B08DLK2FD9/ref=ox_sc_act_title_1?smid=AISREEIOH9TSP&psc=1 I already, unsuccessfully, tried another HDMI ⟷ USB-C cable but it's pretty old and I expect its protocols are not the fastest.
Are your Mac mini & Samsung TV still talking to each other?
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Yes indeed. Then I found out that the USB-C port on this one is a charging port, not a data port :| .. So I also bought the 4-port USB-C data hub from that same brand for my external HD's. Works good. Fix in total was 120 euros.
I have two LG monitors, no Samsung tv.
Arubalube
macrumors newbie
GOOD NEWS: I replaced my HDMI ⇄ HDMI cable with an Anker [A8730] HDMI ⇄ USB-C and the television has been immediately detecting the Mac mini faultlessly for about 3 weeks.
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I just wanted to report that my Mac Mini 8.1 late 2018 (https://everymac.com/systems/apple/mac_mini/specs/mac-mini-core-i7-3.2-late-2018-specs.html) has had this goddamn issue seemingly ever since I first bought it back in 2020 or so. Bought it after having had a completely updated/modded 2006 Mac Pro for the previous 12 years.
Didn't even realize it was an issue until I put together the dots. Tried everything under the freakin sun: cords, cables, anything. Researched the hell out of it. It drove me nuts and I still deal with it to this day. Drives me nuts, and along with the Mini's inability to actually keep itself cool and of course non-expandability, I've missed my Mac Pro ever since.
To the people here who was giving this original guy tstimper crap first claiming it wasn't a thing or he was making it up or it wasn't affecting anyone else, you're full of crap. It's also inexcusable that for the price a known hardware/software defect isn't both acknowledged or was ever corrected, instead as shown by tstimper simply just quietly swept under the rug.
Didn't even realize it was an issue until I put together the dots. Tried everything under the freakin sun: cords, cables, anything. Researched the hell out of it. It drove me nuts and I still deal with it to this day. Drives me nuts, and along with the Mini's inability to actually keep itself cool and of course non-expandability, I've missed my Mac Pro ever since.
To the people here who was giving this original guy tstimper crap first claiming it wasn't a thing or he was making it up or it wasn't affecting anyone else, you're full of crap. It's also inexcusable that for the price a known hardware/software defect isn't both acknowledged or was ever corrected, instead as shown by tstimper simply just quietly swept under the rug.
I'm sorry to resurrect this thread, but a year ago (that's 2023) I bought a Mac Studio M2 Max and the screen would blank out for a second or two randomly. I caught it on video on my iPhone and scheduled a Genius Bar appointment.
They said that had never heard of this issue. I'm reading this thread and seeing many of you have had this issue for a while. Apple's own support page showed thousands of people with this issue.
I got a call from the store manager a few days later offering to refund my money. In the meantime I was able to run 3 of my Intel Macs via HDMI with no issues. A few weeks ago (over a year after the M2 max incident) I got a second hand M2 Ultra, the previous owner had never had any issues with the display blanking out. He demonstrated it for me with his HDMI 4k TV, no issue over several hours. When I got it home it started blanking out again. I had been told it was my 'cable' / 'monitor' / 'os' etc, but again NONE of my intel machines had an issue. Today I got two adaptors, one is an HDMI to DVI - it showed up in the system prefs as a second monitor (I also had connected an Anker USB to HDMI), and I had both plugged into the same monitor. The HDMI to DVI adaptor (Bi-Directional) produced no Video, only a blank Raster on the monitor. At the moment I am using the TB / USB-C to HDMI and no blanking - but there is no way to fully utilize the M2 Ultra's cutting edge video when using a 60Hz UHD adaptor (and it runs warm!).
So frustrated. Apple's answer to everything is simply to throw more money at the problem. I've been told if I buy their 5k Thunderbolt monitor I'll have no problems.
Is it that the HDMI output is faulty on all of our Macs?
This didn't work, BTW.
This did work.
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This thread is about an issue on the 2018 Intel Mini with the Intel UHD630 integrated GPU. Sorry if I'm missing something, but how would this be related to a completely different Mac that uses Apple's own chips?
Yes, exactly: How?
It's not the OS, it's not the cable, it's not the monitor, yet the problem persists over all these systems and Apple still claim they've never heard of it.
djc6
macrumors 6502a
The suspected issue with HDMI on the 2018 mac mini is the MegaChips MCDP2920A4 DisplayPort 1.4 to HDMI 2.0 converter chip inside to operate the HDMI port. The same chip (company is now called Kinetic Technologies) is found in the m1/m2 mac mini so maybe its also operating the HDMI port on the Mac Studio.
My dad's m2 mac mini has same HDMI issues my 2018 mac mini does.
djc6
macrumors 6502a
I can't find a good mac studio teardown, but the ifixit teardown of M1 Pro MacBook pro shows the same chip but branded as Kinetic. Same chip is also in the Apple TV - its everywhere.
MacBook Pro 14" 2021 Chip ID
Apple introduced its M1 Pro/Max processors in the 2021 MacBook Pros. How do these new in-house SoCs change the rest of the logic board’s silicon?...
www.ifixit.com
Kinetic Technologies MCDP2920 DisplayPort-to-HDMI Converter
The issue I have on my 2018 mac mini and my dad has on his m2 mac mini is with energy saving - sleep/wake issues. If I don't turn off the mac mini and don't sleep the displays everything is fine.
Sounds like solution on forthcoming mac mini will be to omit the HDMI port and use your own converter via usb-c 🙂
Have the same problem on Mac mini 2018 macOS Sonoma
Tested 2 different hdmi cables
When waking from sleep I get no signal on tv
When booting the mini I get no signal
Until I reboot Again
Gonna try a usb c to hdmi cable next
Tested 2 different hdmi cables
When waking from sleep I get no signal on tv
When booting the mini I get no signal
Until I reboot Again
Gonna try a usb c to hdmi cable next
I downgraded the 2018 mini to Mojave from Sonoma
Not only is the Mac much faster , but the hdmi problem is gone
I currently have 8gb ram
Plan to upgrade to 16gb in the future
Not only is the Mac much faster , but the hdmi problem is gone
I currently have 8gb ram
Plan to upgrade to 16gb in the future
Never had any problems on my 2018 Mini which I have used with both HDMI cables and USB-C adapters. Mine had Catalina pre-installed, currently on Monterey with no issues. So, I don't think you need to go all the way back to Mojave unless there's something specific to your setup. Planning to upgrade this machine to Sonoma soon, when I finish my current big project. Hopefully this won't be an issue for me, planning to stick with this Mini for another year or two since I arguably use it more heavily with Windows/Parallels than native Mac applications... 🙂
I had to upgrade the 2018 mini to sequoia for app compatibility
The hdmi problem persists
I tried a usbc to hdmi adapter from satechi, and still have the same problem
Maybe a usb c to hdmi cable is better than the adapter?
The hdmi problem persists
I tried a usbc to hdmi adapter from satechi, and still have the same problem
Maybe a usb c to hdmi cable is better than the adapter?
I have a Mac Mini 2018 that's been connected to a TV via HDMI since I got it circa 2018. Overall it's been solid. Few instances where the TV couldn't syc to the signal after coming back from sleep resulting in garbled output. Quick unplugging and plugging of the HDMI fixed. Annoynig but I haven't even seen that in a while. I've run it with Mojave, Catalina, and Monterey all without issue. I will note I am only outputing 1080p to the TV.