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Hello,
I have a problem with my external display Asus VX239. When I a using Mac, there are weird "stripes" showing up like screen sampling on old CRT TV. I tried to switch HDMI cables, use a thunderbolt to an HDMI adapter, and even replace a different monitor, but nothing changed. Honestly, I do not, if it is something wrong with the Mac mini or if it is a problem with the external monitor.
Thank you in advice for help.
Mac mini, macOS 13.4
The problem was with monitor. I bought this beauty https://www.amazon.com/LG-32UN650-W-Compatibility-Borderless-Adjustable/dp/B08FQ42MN1.
Now it’s everything working fine. Again thanks for help.
I have final question. 4k resolution settings on Mac OS causes it’s everything small. If I will change to FHD scale (normal size), will be for example videos on YouTube really in 4k?
I have checked OSD settings (reset to default, switching profiles) still same problem. Even I dowloaded icm color profile from official ASUS website and nothing work. I need to know, if this problem is cause by my monitor or the Mac, because I found forum thread with similar problem. (adding url + photo of my problem for better imagination)
The M2 Mac mini does not do well with long cheap HDMI cables.
Test a short premium certified HDMI cable.
for example > https://www.amazon.com/Tera-Grand-Certified-Aluminum-Supports/dp/B09MBQ2B8L/ref=sr_1_11?
You're welcome.
Sounds like the ASUS OSD settings or features needs to be adjusted or changed.
Check in the ASUS user manual or directly with ASUS support.
https://www.asus.com/supportonly/vx239h/helpdesk_manual/?model2Name=VX239H
I have similar problem on my Mac Mini M2. When I open some dark colored images (for example this one: https://www.pinterest.com/pin/356347389282221785/ ) my BenQ PD2700U starts flickering and vertical stripes appear.I have an Asus VZ239, and the same thing happens to it, but with different web images (Safari, Google Chrome doesn't matter). I think something is wrong with the Mac Mini M2 or the Mac OS itself. I tried a High-Speed 4K HDMI cable and a 'USB C to DisplayPort 1.4 Cable 8K@60Hz 4K@240Hz Thunderbolt 4/3 to DisplayPort Cord USB C to DP 1.4 32.4 Gbps Alu Braided Compatible with MacBook Pro/Air, iPad, Mac Mini, Galaxy, XPS 15 3.3FT,' but the results were the same.
Good idea. Wouldn't hurt to test the Mac mini with a different display or HDMI TV.
You're welcome.
You're welcome. Glad to hear you found the problem and a good display.
Thank you for your reply. I tried to buy new HDMI cable with mentioned certification. Overall picture is better than before, but the problem persists.
I'm out of ideas.
Seems like you need to take the Mac mini and perhaps the display, to your local Apple Store or AASP for an evaluation.
I hope there is a problem with display, not with the Mac. Thanks for help anyway.
How long is the HDMI cable?
Mac mini M2, problem with external display
