Question Acer monitor driving me crazy when shared between my MacBook Pro and Windows 11 PC

[wowbobwow]

Hi all,

My home workstation setup is pretty straightforward: a MacBook Pro (M3) connected to the HDMI1 port of my Acer XZ322QU V3 monitor, and my recently-built Windows 11 PC connected to the same monitor via DisplayPort. I should also note here that all drivers on the Mac and PC are fully updated, OS updates are current, etc.

Here’s the weird thing: in the monitor settings, “Auto Source” is turned off. However, there seems to be some bug or glitch at play. If the monitor is set to HDMI1 and I wake my Mac up from sleep, I can hear my PC wake up too - something is being "passed" from the Mac via HDMI through the monitor and waking up the PC via DisplayPort!

Similarly, when I switch the monitor from HDMI1 to DisplayPort, if the PC is awake it works fine sometimes… or it just immediately turns the monitor off, seemingly at random. If the PC is asleep and I switch the monitor from HDMI1 to DisplayPort, the monitor powers off after ~5 seconds, and even after the PC is definitely awake - the monitor stubbornly refuses to ‘kick in’ until I try half a dozen times or more, and then it works fine.

What’s going on here? It’s super weird!

I should note that literally none of these behaviors were happening before I built my new PC and upgraded to Windows 11. I went from an older Intel CPU + Vega64 GPU to a Ryzen 7 9800X3D + a new 5080, but both PC's always used DisplayPort into the monitor. Any tips or suggestions would be welcome, this is driving me kinda bonkers because I need to switch between computers multiple times per day…

 

[Lutfij]

Welcome to the forums, newcomer!

Just curious, did you recycle the OS drive with the OS when you migrated platforms(the system upgrade for Windows)?

I went from an older Intel CPU + Vega64 GPU to a Ryzen 7 9800X3D + a new 5080, but both PC's always used DisplayPort into the monitor.
When posting a thread of troubleshooting nature, it's customary to include your full system's specs. Please list the specs to your build like so:
CPU:
CPU cooler:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:
include the age of the PSU apart from it's make and model. BIOS version for your motherboard at this moment of time. Considering you moved from an Intel platform to an AMD platform, a before and after of your specs would be a good idea. To add, please add the driver version for your GPU at this moment of time.