Hi!
I have a 2018 MBP and an AOC 34" Ultrawide.
After some faffing the best I can get is 3440x1440 at 30Hz.
Am I missing something or does the device just not support a higher refresh rate? Seems crazy for such a high-spec machine.
Thanks
MacBook Pro
HDMI is a consumer-class Interface invented for HD TV sets. it rather quickly 'runs out of gas' unless you use Certified "Premium high speed" cables and appropriate high-resolution-rated adapters.
if you can use an adapter to DisplayPort 1.4 instead, it will be much more trouble-free.
If you need more help, please describe All the devices in the chain from the computer to the display, and the exact model number of the display itself.
HDMI is a consumer-class Interface invented for HD TV sets. it rather quickly 'runs out of gas' unless you use Certified "Premium high speed" cables and appropriate high-resolution-rated adapters.
if you can use an adapter to DisplayPort 1.4 instead, it will be much more trouble-free.
If you need more help, please describe All the devices in the chain from the computer to the display, and the exact model number of the display itself.
Your computer is capable of 5K at hi-color at 60 Hz, and supports DisplayPort 1.4 over USB-C or thunderbolt.
The display should be able to go to hi-color 4K at 60Hz easily over DisplayPort 1.4. -- But it may not be set that way.
What has happened to some users is that the display was set internally (using On-screen display settings inside the display) to only DisplayPort 1.2. this reduced the top specs available slightly.
So use the On-screen display settings, and make certain DisplayPort is set for DisplayPort 1.4, which INcludes Data Stream Compression, This allows more data to be sent at essentially the same electrical signaling rate.
Just an fyi, I got it working at 3440x1440@60Hz with the below adapter.
https://www.amazon.co.uk/gp/product/B07X1VZRT1/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Several different displays match the description you posted initially.
Can you please post the EXACT model name, or a link to its specs?
...and your MacBook Pro 2018, is this the 13-in, the 15-in, or the 15-in Vega model?
"this same cable" or the same model, a different sample? maybe the adapter is failing.
In the extremely unlikely event that the port on your Mac has a problem, try flipping the USB-C end of the adapter over so that it uses the contacts on the other side of the computer port.
I’ve tried all the ports using both sides of the USBC connector. This has to be something unique with Mac OS because my windows laptop works fine with the same cable. 3440x1440@144Hz
Windows is not the same.
The Mac uses a system that reminds me of “Plug and play” to determine what display is connected, and what its capabilities are.
To get a Mac display to become active, you need the Mac to query the display, and the display to answer with its name and capabilities. Otherwise, the display will not be shown as present, and no data will be sent to the display. "No signal detected" is generated by the DISPLAY, not by the Mac.
If you can't set a higher resolution or refresh rate on a Mac, it is generally because the display is telling the Mac it can't run any higher.
So the monitor is set to DP 1.4 mode. Also, just remembered my work laptop has DP over USBC and this can use the monitor just fine at 144Hz with the same cable. I’m really at a loss.
Hi, thanks for the reply. I’ve brought 3 or 4 different cables that all claim DP 1.4, I can get the resolution at 30Hz but this seems too low for the device. I want at least 60Hz. Monitor is 144Hz max.
MBP is 15" 2018. Intel Graphics, i7, 32Gb memory.
Monitor is:AOC Gaming **34G2X-https://www.amazon.co.uk/gp/product/B082VHT11B/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Here are two of the cables I've tried:
https://www.amazon.co.uk/gp/product/B08B3SB5VC/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
https://www.amazon.co.uk/gp/product/B075V27G2R/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
The cable is the same one I’m trying with my MacBook. It’s brand new, so is the other cable which also allows 3440x1440@144Hz on Windows.
The adapter you linked is a genuine thunderbolt device, but it is not showing any DisplayPort jacks. Is that the one you used?
Yea, I used it with a HDMI cable. Thanks for trying to help out btw.
2018 MacBook Pro, Ultrawide refresh rate/resolution
