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November 9th, 2021 04:00
U3219Q, macOS 12 Montery issue
Hello!
I have two U3219Q monitors conected to Mac Mini using USB Type-C. I am using macOS 12 Montery and both screens worked. I updated the firmware on one U3219Q (disconected the other U3219Q first). Now the updated U3219Q wont work with USB Type-C. It works if I use HDMI to the updated U3219Q and USB Type-C to the not updated U3219Q. If I connect the updated U3219Q to my laptop using macOS 11 Big Sur, the USB Type-C works.
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serifreedom
5 Posts
0
January 4th, 2022 11:00
For anyone who facing the issue external display not working as usual via USB-C after upgrade to macOS Monterey, for my case =
I've found a workaround on Reddit =
macOS Monterey external monitor issues
Unplug the power cable from the monitor while the USB-C cable is still connected to the laptop. Then reconnect the power cable to the monitor.
oli-j
4 Posts
0
November 11th, 2021 05:00
I also am having an issue with Monterey on my M1 MacBook Pro.
After installing Monterey, USB-C on my MacBook was only connecting to the U3219Q at USB 2.0 speeds (480mbps). The display still worked fine, but some of my devices connected to it that needed UBS 3.0/3.1 speeds wouldn't work.
I briefly got the U3219Q to connect to the Mac at 5Gbps speeds by swapping out the Dell provided USB-C 3.1 gen 2 cable with a USB-IF certified 3.1 gen 1 cable. But that was yesterday and this morning it is back to the same issue.
There are lots of reports of USB issues with Monterey.
I have spoken to apple support and so far tried:
Nothing seems to work.
I upgraded the firmware for the monitor, but that didn't make any difference.
AmpedToGo
2 Posts
0
December 15th, 2021 17:00
For the U3219Q monitor, avoid upgrading your monitor firmware to version M3B110, it regresses your ability to drive video out to the monitor with a Mac over USB-C. After I hit the issue, I spoke with someone at Dell and learned you can downgrade the monitor firmware (using another computer or using an HDMI connected Mac) to version M3B107 and that worked for me. I'm still on Big Sur with an x64 Mac Mini and that works.
fitzgeraldo
1 Message
0
April 29th, 2022 08:00
Where did you get version M3B107? I can get only M3B110…