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U3219Q, MacBook Pro M1 Max, loses USB-C signal
Hi,
I have a MacBook Pro M1 Max and I just added a U3219Q monitor and it connected fine via USB-C on initial setup.
But every time I power down, upon restart or powering on, the U3219Q doesn't recognize the USB-C connection? The only way to get it to work is to unplug the U3219Q at the mains power.
I've read that this issue can be remedied by using the HDMI but a big selling point on this monitor was the USB-C Power Delivery.
Anyone else had this issue or experiencing something similar?
I'm having this issue as well. I don't have to disconnect power entirely, though. . . but I have to turn off the monitor and back on so it will be recognized again. This is a huge issue as the macbook loses ALL of my window positions EACH time it goes to sleep.
Turning off my monitor and then back on, does not work in my scenario, period. I have to disconnect the power of the monitor for it to work every time. Dell has been wonderful with regard to working through this to come to a solution, which is yet to be found. At the moment, the only thing that 'MAY' work, which I am yet to test, is having your MacBook also connected to it's native power supply as well as the USB-C cable to the monitor. I know, I know, this completely defeats the purpose of having a USB-C cable for both power delivery and operating a monitor at the same time, but dell has told me, this whole issue may be a MAC OS Monterey Issue as stated in the developer notes.
serifreedom
5 Posts
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0
Posted January 4th, 2022 11:00
For anyone who facing the issue external display not working as usual via usb-c after upgrade to Monterey, for my case...
I've found WORKaround on Reddit =
macOS Monterey 12.0.1 External Monitor Issues
This is a known issue in 12.0.1 with wakeup, if that's what you're experiencing. See below:
There might be issues with wakeup when dual monitors are connected. (79839446)
Workaround: Connect the power adapter that came with the Mac.