Mac Mini (Apple Silicon Late 2020) seems to have some problem to work at 60hz on Benq PD3220U monitor via Thunderbird 3. You can only get 30hz.
No trouble at all with HDMI. It seems like there is some issue with the brand new Mac graphics and this monitor.
Does anyone know if there is some way to get 60hz working with Benq PD3220U and thunderbolt 3?
Hello AmeDSL.
Thanks for reaching out to Apple Support Communities. We understand that you are having issues with getting a 60Hz refresh rate with your Mac mini connected to a monitor. We will be glad to assist.
Please see the following resource: Get help with video issues on external displays connected to your Mac
Cheers.
I wrote to Benq, and they say they're working on it, but they don't know if it's a hardware problem or something else. Apple, as always, says nothing but it is a problem present on many other monitors from other brands too. At the moment the only solution is to connect it with a HDMI cable that supports 4k 60hz.
I will also reach Benq this is a problem not to be taken lightly, we are talking about a expensive monitor and as well as an expensive computer. I have reach apple 2 times they kept telling me it's a hardware problem and that I should get a replacement for my mac .... its really hard to escalate this issue in Apple
It’s because Apple assistance service don't really listen customers matters. Do replacement product it’s easier than contact engineers and tell them about issues, until next product will come with the same identical problem. What we can wish is that engineers (of both company) keep an eye on it soon as possible.
Problem still not solved after the latest update (11.1) for the smaller brother of the BenQ monitor, PD2720U (on MacMini M1). Cannot achieve 60hz 4K via TB3 or with a TB3 to DP cable. Very upsetting for 2 pieces of hardware that are both recently released, not cheap and using the latest connectivity.
Thanks. Unfortunately this didn't solve my issue. Even with EasyRes that makes changing resolutions/frequencies easier, I don't have 60Hz for any retina (2x) resolution above 720p when connected via TB3 to my BenQ PD2720U...
Thanks, but.... believe me, I've tried everything, it seems some 4k USB-C/TB3 monitors are still not supported at 60Hz when using DP via USB-C/TB3 while HDMI is fine.
The TB3 cables I have are working fine with same monitor and other computers; Also, an USB-C to HDMI adapter is limited to 4K/30Hz. :(
This problem appears to have been resolved upon upgrade to macOS 11.1 (released 12/14/2020). My Macbook Air M1 now achieves 4K 60Hz on my Benq PD3220U over Thunderbolt.
Hi AmeDSL.
Thanks for trying those steps. Next, we would recommend contacting Apple Support.
Contact Apple for support and service
Cheers.
The display has two Thunderbolt 3 ports. Have your tried with the other port.
I did it, nothings’ change. There are a well described issues on this video, it’s more related to M1 Chip https://youtu.be/NVi0YdAB2M0
I have the exact same problem, it's so annoying, did you find the cause of this issue ?
TIP: I had to install EasyRes in order to choose resolutions with 60Hz. The built in settings would only choose 30Hz. Now it's perfect.
Could it be the cable or a needed restart of the Mac?
Apple Mini (Silicon) and Benq PD3220U
