Philips 499P9H Curved SuperWide-LCD-Display on MacBook Pro M1 2021

Hello, I am facing a problem with USB-C connection with the native resolution of this display.

It works well most of the time, but sometimes, mostly after starting up from sleep, the OS doesn't recognise all display resolutions and switches to 3840x1080, where the native is 5120x1440. Reconnecting display doesn't work, only reboot. Any ideas why this happens ?


Posted on Dec 25, 2023 3:05 AM

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Dec 26, 2023 9:32 PM in response to hcsitas

Hello, thanks for reply. I don't see those options, my laptop is managed by company.

I do have enabled "prevent automatic sleeping on power adapter when display is off" under Battery.


What I notice is that the display is not detected correctly. When I have everything working, there are 3 refresh rates available for my display: 30/60/70Hz . When I am not able to select correct resolution, I can only see two refresh rates options.


It doesn't happen very often, but I'd like to know how to reload the display driver / restart from shell, so I don't have to reboot the device. Unplug / plug USB-C cable doesn't work.


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Philips 499P9H Curved SuperWide-LCD-Display on MacBook Pro M1 2021

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