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lightfire

macrumors regular
Original poster
Aug 10, 2017
143
30
Anyone using this setup? Does it work well with no issues?
What cable are you using?
 

heretiq

Contributor
Jan 31, 2014
1,026
1,689
Denver, CO
I have this setup and working with an 8GB RAM / 512GB M1 mini using the Apple USB-C Thunderbolt 3 cable. It works great with one problem: On reboot, the Monitor does not detect a USB-C signal. Removing and reinserting the USB-C cable solves the problem. Luckily this happens infrequently so it's not a show-stopper. I am expecting Apple to correct this in a future firmware update. You can see my setup and answers to questions in this post: https://forums.macrumors.com/threads/anyone-going-from-mbp-16-to-mac-mini-m1.2269969/

Hope this helps.
 
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KScottMyers

macrumors 6502
Jul 17, 2009
252
7
Orlando, FL
I have this setup and working with an 8GB RAM / 512GB M1 mini using the Apple USB-C Thunderbolt 3 cable. It works great with one problem: On reboot, the Monitor does not detect a USB-C signal. Removing and reinserting the USB-C cable solves the problem. Luckily this happens infrequently so it's not a show-stopper. I am expecting Apple to correct this in a future firmware update. You can see my setup and answers to questions in this post: https://forums.macrumors.com/threads/anyone-going-from-mbp-16-to-mac-mini-m1.2269969/

Hope this helps.
Has the detecting a USB-C signal issue been resolved since Apple updated to 11.1?

Also - looks for help on the items below...

Need some help on a few things with the Dell U3219Q on an Apple M1 mini.

I just received and setup my M1 Mac mini and I’m looking for a good 4k display with minimal M1 issues. I have already retuned a LG 38WK95C-W due to poor image quality and USB issues when connected off the back of the monitor. I also found the ultra wide display a bit too wide. The Dell does appear to be a good alternative.

Can someone with the U3219Q possibly confirm a few things…

• I’m coming from an Apple Thunderbolt 27” display using its native resolution of 2560 x 1440. Everything works and looks great but I would like a larger and higher resolution monitor.

I know that running a 4k monitor at full resolution makes things a bit too small, but I would like to run it at 3008 x 1692 to have more real estate than 2560 x 1440. Can anyone confirm that things still look good at this scaled resolution for daily use? If I had to scale back to 2560 x 1440 I might as well just stay with the Thunderbolt Display.

• Also, one of the reasons I returned the LG was due to the USB hub built into the monitor. If I had a USB hard drive/SSD connected and the computer went to sleep, the drive would be ejected ungracefully and I would get the message that the drive was unmounted improperly. Obviously this is not what I want. I have tested this on a different Dell display and things work as they should, just like if they were connected to the back of the Mac. I would like to know if this is working also on the Dell U3219Q.

Thanks for your help.
 

Mistercharlie

macrumors regular
Nov 27, 2020
150
60
Has the detecting a USB-C signal issue been resolved since Apple updated to 11.1?
No. I have the Mac mini and the U3219Q, and spent some time with Apple support trying to fix this. It’s still broken in 11.1. I use a CalDigit dock, and connect from there using DisplayPort.
I know that running a 4k monitor at full resolution makes things a bit too small, but I would like to run it at 3008 x 1692 to have more real estate than 2560 x 1440. Can anyone confirm that things still look good at this scaled resolution for daily use? If I had to scale back to 2560 x 1440 I might as well just stay with the Thunderbolt Display.
Look great. I use this resolution. It’s almost as good as native res, but you can only see the difference close up. I use my mac for writing, and photos, so I’m fussy.
Also, one of the reasons I returned the LG was due to the USB hub built into the monitor. If I had a USB hard drive/SSD connected and the computer went to sleep, the drive would be ejected ungracefully and I would get the message that the drive was unmounted improperly. Obviously this is not what I want. I have tested this on a different Dell display and things work as they should, just like if they were connected to the back of the Mac. I would like to know if this is working also on the Dell U3219Q.

I will test again, but I have my drives connected to the Thunderbolt dock. I remember that, when I hooked up an old backup hdd to the monitor, it kept mounting, even though it was set to stay unmounted.

Also worth noting is that the monitor reports that it is not connected via RGB, but instead by YPbPr. I did manage to force an RBG connection and it looked exactly the same.


I recommend this monitor. Would buy again.
 
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KScottMyers

macrumors 6502
Jul 17, 2009
252
7
Orlando, FL
No. I have the Mac mini and the U3219Q, and spent some time with Apple support trying to fix this. It’s still broken in 11.1. I use a CalDigit dock, and connect from there using DisplayPort.

Look great. I use this resolution. It’s almost as good as native res, but you can only see the difference close up. I use my mac for writing, and photos, so I’m fussy.


I will test again, but I have my drives connected to the Thunderbolt dock. I remember that, when I hooked up an old backup hdd to the monitor, it kept mounting, even though it was set to stay unmounted.

Also worth noting is that the monitor reports that it is not connected via RGB, but instead by YPbPr. I did manage to force an RBG connection and it looked exactly the same.


I recommend this monitor. Would buy again.
Thanks for the info. Good to hear about the USB ports. I'm more concerned about them dismounting when the Mac goes to sleep. I use a drive for Time Machine. Sounds like it works. Another question - do all the USB ports work if connected via USB-C? Even the side ports? Whats with the USB uplink port - is this if you are connected via DP or HDMI?

Thanks again - seems like a great monitor.
 

Mistercharlie

macrumors regular
Nov 27, 2020
150
60
Thanks for the info. Good to hear about the USB ports. I'm more concerned about them dismounting when the Mac goes to sleep. I use a drive for Time Machine. Sounds like it works. Another question - do all the USB ports work if connected via USB-C? Even the side ports? Whats with the USB uplink port - is this if you are connected via DP or HDMI?

Thanks again - seems like a great monitor.
Yes, all ports work. If you connect the monitor via USB-C, you don’t need the uplink usb port. However, the ports on the monitor will only run at usb 2.0 speeds, I think because the USB-C monitor connection uses most of the available bandwidth. That’s fine for mice and audio gear though.

I have the uplink cable connected, because I’m using DisplayPort. I get USB3.0 speeds.
 

pldelisle

macrumors 68020
May 4, 2020
2,248
1,506
Montreal, Quebec, Canada
No. I have the Mac mini and the U3219Q, and spent some time with Apple support trying to fix this. It’s still broken in 11.1. I use a CalDigit dock, and connect from there using DisplayPort.

Look great. I use this resolution. It’s almost as good as native res, but you can only see the difference close up. I use my mac for writing, and photos, so I’m fussy.


I will test again, but I have my drives connected to the Thunderbolt dock. I remember that, when I hooked up an old backup hdd to the monitor, it kept mounting, even though it was set to stay unmounted.

Also worth noting is that the monitor reports that it is not connected via RGB, but instead by YPbPr. I did manage to force an RBG connection and it looked exactly the same.


I recommend this monitor. Would buy again.
How did you manage to force it into RGB on M1?!
 

Mistercharlie

macrumors regular
Nov 27, 2020
150
60
How did you manage to force it into RGB on M1?!
There’s a thread about it somewhere on here. You enable HDR on the monitor, and then the uncheck the HDR box in the display prefpane.

Works semi-reliably for me. And only via USB-C connection, not DisplayPort (haven’t tested hdmi).
 
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Donza

macrumors regular
Nov 14, 2006
201
97
Finland
Yes, all ports work. If you connect the monitor via USB-C, you don’t need the uplink usb port. However, the ports on the monitor will only run at usb 2.0 speeds, I think because the USB-C monitor connection uses most of the available bandwidth. That’s fine for mice and audio gear though.

I have the uplink cable connected, because I’m using DisplayPort. I get USB3.0 speeds.
I couldn't get USB ports to work with my M1 Mac mini just with the single USB-C cable. I used the cable supplied by Dell with the monitor.

Now I ended up switching to HDMI + uplink USB cable and things work pretty well. However, I noticed that there are less scaling options available with HDMI cable (I'm running display in 2560 x 1440 mode - its super crisp ?). As a plus side I think screen wakes up more reliably (but still slowly) with HDMI compared to USB-C.

Screenshot 2021-01-21 at 20.32.36.png
 
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pldelisle

macrumors 68020
May 4, 2020
2,248
1,506
Montreal, Quebec, Canada
I couldn't get USB ports to work with my M1 Mac mini just with the single USB-C cable. I used the cable supplied by Dell with the monitor.

Now I ended up switching to HDMI + uplink USB cable and things work pretty well. However, I noticed that there are less scaling options available with HDMI cable (I'm running display in 2560 x 1440 mode - its super crisp ?). As a plus side I think screen wakes up more reliably (but still slowly) with HDMI compared to USB-C.

View attachment 1717042
But I guess you still have YPbPr color scheme in the OSD.
 

Donza

macrumors regular
Nov 14, 2006
201
97
Finland
But I guess you still have YPbPr color scheme in the OSD.
Yes. To me the picture looks good, but of course would be interesting to see the difference to RGB. Hopefully this is on the long list of bugs Apple is working on with 11.2.

I might try USB-C connection once again, but concerned I lose the USB hub functionality on monitor again.
 

Mistercharlie

macrumors regular
Nov 27, 2020
150
60
Yes. To me the picture looks good, but of course would be interesting to see the difference to RGB. Hopefully this is on the long list of bugs Apple is working on with 11.2.

I might try USB-C connection once again, but concerned I lose the USB hub functionality on monitor again.
You can use USB-C for the display, and also use another usb cable for uplink. I’m using DisplayPort btw. Works great!
 

Donza

macrumors regular
Nov 14, 2006
201
97
Finland
I think I tried this and couldn’t get the hub work. But I’ll give it another go tomorrow.
Okay, I now switched to USB-C and kept the separate uplink USB connection. All looks to be working and I got one additional display scaling option 3008x1692 between native 4K and 2560x1440. I think I'll keep it this way as this scaling looks to be the sweet spot between screen real estate and font sizes.

But I was not able to output RGB - I tried to play with the HDR modes, but didn't help.
 

Donza

macrumors regular
Nov 14, 2006
201
97
Finland
Can you use the USB-C connection and the USB uplink for data at the same time?
VERY good question.

Although I have USB-C and the USB uplink both connected, it doesn't seem to be using the uplink connection (I tested by unplugging the uplink and devices remain connected). And now I noticed that I'm getting very slow data on the monitor's USB ports probably since the uplink cable is not working.

Any idea if Dell monitor even supports USB-C and USB uplink simultaneously?
 

KScottMyers

macrumors 6502
Jul 17, 2009
252
7
Orlando, FL
Maybe the monitor determines the USB data ports used by what's plugged in first. You could try this - unplug everything - then plugin the USB uplink first, then the USB-C cable. Test and see?
 

Donza

macrumors regular
Nov 14, 2006
201
97
Finland
Maybe the monitor determines the USB data ports used by what's plugged in first. You could try this - unplug everything - then plugin the USB uplink first, then the USB-C cable. Test and see?
Nope... Couldn't get the uplink cable to work even when I only plugged it in first, and then USB-C.

Maybe need to contact Dell to find out if this is even possible.
 

Mistercharlie

macrumors regular
Nov 27, 2020
150
60
There’s a setting on the monitor that lets you choose the usb cable that’s used for data. This only has settings for DisplayPort and HDMI.
Do you keep the HDR mode on or off? I have it currently on in monitor OSD settings, but off in macOS display settings.
Off. It’s not available for DisplayPort connections.
 

Donza

macrumors regular
Nov 14, 2006
201
97
Finland
There’s a setting on the monitor that lets you choose the usb cable that’s used for data. This only has settings for DisplayPort and HDMI.
Yep, I noticed this. It made me think that USB uplink is only designed to work alongside DP and HDMI connections.
 

KScottMyers

macrumors 6502
Jul 17, 2009
252
7
Orlando, FL
There’s a setting on the monitor that lets you choose the usb cable that’s used for data. This only has settings for DisplayPort and HDMI.

Off. It’s not available for DisplayPort connections.
Thanks for the clarification. So I assume you could connect using display port to retain a 3008x1692 resolution and then use the USB Uplink to maintain USB 3 compatibility?
 

Donza

macrumors regular
Nov 14, 2006
201
97
Finland
Thanks for the clarification. So I assume you could connect using display port to retain a 3008x1692 resolution and then use the USB Uplink to maintain USB 3 compatibility?
Probably I could - would just need to get DP - USB-C cable which I don't currently have. Maybe I'll pick one up this weekend.

I guess this is the setup @Mistercharlie is using?
 
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