extremzocker Author

Level 1

15 points

Philips 34" 346P1CRH not Supporting Full Resolution at 100Hz

I've recently bought an ultrawide monitor (Philips 346P1CRH), which I intended to

use with my 2019 MacBook Pro 16" over USB-C. Unfortunately, I was not yet

able to get the native resolution of 3440x1440 pixels working in combination

with a 100Hz refresh rate. The only possibilities I have are either

3440x1440@60Hz or 2560x1080@100Hz, which both aren't optimal.

I've already tried different USB cables, which all yield to the same result.

Connecting a Windows Laptop, everything works fine with full resolution and refresh

rate. As I also have access to a Philips 34” 346B1C (similar model with the same

resolution and refresh rate), I also tried to connect my MacBook with this

monitor, where I got the full resolution at a 100Hz without any problems.

Does anyone

have a similar problem and probably knows, how to solve it?

Posted on Jan 7, 2021 4:51 AM

Top-ranking reply

Honzina

Level 1

10 points

Posted on Mar 9, 2021 6:05 AM

Maybe just a bad question, but did you tried to switch between USB-hub setting as Philips describe in specs?

"The USB hub default setting of USB C input for this monitor is "USB 3.2". The resolution supported by USB 3.2 is 3440 x 1440 @ 60 Hz. When user switches to USB 2.0, the resolution supported will be 3440 x 1440 @ 100 Hz."

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Similar questions

27 replies

Mar 2, 2021 7:22 AM in response to tspavan

MacBook Pro screens for models after 2016 and wider than 4096 pixels wide are only supported in Big Sur and later MacOS.

Older computers or older MacOS only supported using two cables.

extremzocker Author

Level 1

15 points

Feb 1, 2021 4:12 AM in response to mingoslkd

Hi,

thanks for your reply. I've already tried all of those settings, unfortunately without luck. Somehow there is no option to run both the full resolution and the highest refresh rate at the same time. I've also tried to play around with the EDID-Settings and did override the standard EDID-Info, which also didn't help.

Talking with the Philips-Support-Team, they also couldn't help and said, that it should work with "Plug and Play" and that the settings I've set should all be correct.

extremzocker Author

Level 1

15 points

Feb 1, 2021 9:20 AM in response to Grant Bennet-Alder

I already found that out. That's, why I tried to modify the EDID, but no matter, which settings I change in the EDID file, I can't get the correct resolution and frame rate. Interestingly, it works out of the box with the integrated graphics of the 13" MacBook.

extremzocker Author

Level 1

15 points

Mar 4, 2021 12:59 AM in response to tspavan

I already tried it with different cables (cable included with the monitor, Apple original cable, cable included with the 49" monitor, which works correctly at that monitor, cable of the previous Philips Monitor the friend of mine has and a cable bought from Amazon). With all cables I had the same issues. But maybe you can find a cable, that will work properly.

Mar 22, 2021 8:18 AM in response to extremzocker

"Windows does it" is not a convincing argument in the slightest.

'The way Windows does it' is in stark contrast to the Apple standard for its built-in hardware-accelerated displays, which are suitable for production/display of cinema-quality video with NO dropped frames, and NO dropouts or partial-blank scan lines due to memory under-runs or other issues.

Windows allows you to set whatever you please and endure whatever the fallout may be. Apple does not.

jay_cph

Level 1

8 points

Feb 13, 2021 8:28 AM in response to extremzocker

Following along here, as I have been considering the same monitor. Currently running the Lenovo T14s due to school/work, but could very well go back to a macbook soon again.

tspavan

Level 1

4 points

Mar 2, 2021 5:50 AM in response to extremzocker

Having the same issue with a 2017 15-inch Macbook Pro (Radeon Pro 555 2GB + Integrated) and the same monitor.

Did you manage to find a workaround?

tspavan

Level 1

4 points

Mar 2, 2021 7:48 AM in response to Grant Bennet-Alder

Thanks for your reply Grant.

However, the issue is with a 3440 x 1440 external screen on a post-2016 MacBook Pro running Big Sur, so should really be supported at 100Hz.

tspavan

Level 1

4 points

Mar 4, 2021 12:41 AM in response to extremzocker

Thanks for getting back to me.

Someone on another forum suggested it was a cable issue and replacing the cable strangely seemed to work for them. Not convinced, but will give it a go and report back.

Mar 6, 2021 6:35 AM in response to extremzocker

+1 here. Same monitor, same MBP (2019 16" 5500M) and only getting 60Hz. Annoying.

tspavan

Level 1

4 points

Mar 9, 2021 6:15 AM in response to Honzina

Genius!!

That's worked. I wonder why that is, and whether you lose any functionality by reverting to USB 2.0? Haven't noticed any other differences.

Honzina

Level 1

10 points

Mar 9, 2021 6:21 AM in response to tspavan

The only thing you will "lost" is the speed of USB 3.2.

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Philips 34" 346P1CRH not Supporting Full Resolution at 100Hz