MacBook M1 Only Pulling 30hz on External Monitors

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MacBook M1 Only Pulling 30hz on External Monitors

Hey ya'll I recently purchased a SONNETTECH Echo 11 docking station and when I connect my two ViewSonic VP2771 monitors via TB cables I'm only able to select 30hz as an option. I'm not looking to run 4k but I'm trying to run 2560x1440 at 60hz.

I updated the firmware on my monitors and verified I'm running the most current version of MacOS.

Any insight as to how I could get 60hz? according to SONNETTECH it supports MacOS/MacBooks.

Thank you!

MacBook Pro 14″, macOS 15.0

Posted on Oct 5, 2024 5:55 AM

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Answer 1

Top-ranking reply

Grant Bennet-Alder

Level 10

144,533 points

Oct 5, 2024 7:00 AM in response to PorkedBeef

ViewSonic VP2771 is not a ThunderBolt display, it connects via USB-C.

To connect a USB-C device to a high-end, high resolution output, the cables must be certified (and marked) as USB 3.1 10 G bits/sec speed capable or better, and must be shorter than one meter.

cables "shipped in the box' are notorious for being "lowest bidder" cables, good enough to keep you from returning the product on day one.

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Answer 2

Oct 5, 2024 7:18 AM in response to PorkedBeef

the portion from the computer-end to the electronics must be shorter than 1 meter, and the portion from the electronics to the display must be shorter than 1 meter.

unless those cables have the electronics bulge in the middle, two meter = six feet is too long for reliable, full-featured operation.

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Answer 3

PorkedBeef Author

Level 1

12 points

Oct 5, 2024 7:22 AM in response to Grant Bennet-Alder

Thank you Grant Bennet-Alder! I recently bought "4K USB-C to DP" and it was also pulling 30hz but it's also a 6ft cable. Do you have any recommendations for DP-TB cables? Or would Apple's TB4 cable work with my monitor(s)?

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Answer 4

PorkedBeef Author

Level 1

12 points

Oct 5, 2024 9:37 AM in response to Grant Bennet-Alder

Good to know thank you again! I'm going to stop by the Apple Store here in Philly and buy two of the TB4 to fix this. I was going crazy looking for an answer on Reddit and other forums but nobody responded or was helpful.

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MacBook M1 Only Pulling 30hz on External Monitors

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