Philips phl499P9 and MBP M1 Max sound problem

Hello.

I have now a M1 Max MBP, with the phl499P9 monitor attached to USB-C (thunderbolt). (This same problem was on MBP 2019)

Everything works fine, webcam and sound, until the computer goes to or are set to sleep. When waking up there are no more sound on the internal speakers on the phl499P9 monitor. Until I turn it off and on again.

The problem then is that all disks connected have to be 'remounted'. And that is a pain. Or of course a restart of computer, but also a pain.

Contacted Philips, 'not their problem', because they are not supporting MacOS on this monitor.

To sad.. because its a brilliant monitor together with an MBP 16" M1 Max 64GB. The combination is stunning.

Im living in hope.. but slowly recognize a possible resignation...

Any help out there please..:)

MacBook Pro 16″, macOS 12.0

Posted on Dec 14, 2021 6:12 AM

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1 reply

dawngreg08

Community Specialist

Dec 15, 2021 7:27 AM in response to SteinarBraa

Hello SteinarBraa,

Welcome to Apple Support Communities!

If we understand your post correctly, you're having sound issues with the Philips phl499P9 monitor and the MBP M1 Max. We'd like to see if we can help!

Below is an article that will provide how to use external monitors with your Mac.

Use one or more external displays with your Mac

You can also check out this article as well: Connect a display to your Mac

Identify the ports that are on your MacBook Pro M1 Max.

Identify the ports on your Mac

Also, ensure you're using the correct adapter.

Adapters for the Thunderbolt 4, Thunderbolt 3, or USB-C port on your Mac

Let us know if you have any questions.

Thank you for using Apple Support Communities.

Take care!

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Philips phl499P9 and MBP M1 Max sound problem