No audio on my Philips monitor 279P1 connected to Mac Mini via USB-C

Does the audio work if you select DisplayPort?

Have you tried a different USB-C cable?

Other connection options with that display include,

HDMI to HDMI which supports 4K and audio.

USB-C to DisplayPort which supports audio.

FWIW some folks with LG and HP displays have had to use a dual cable setup.

HDMI or USB-C to DisplayPort for video and audio plus USB-C for USB docking.

Connect the USB C of the monitor to USB A on the mini (with suitable adapter or a USB C to USB A cable) and use HDMI for video. Most monitors with USB-C power delivery can’t tell the difference between a desktop and a laptop, and if it’s a mini, end up with strange results. Therefore, avoid the single do-it-all USB C solution with the mini. It’s an overrated feature anyway, nuthin’ is better than dedicated video, nuthin.

Not one bit. The monitor hub is USB 3. That apart, most likely your scanner is USB 2, your printer too & backups don’t really need to go top speed. In other words, even USB 3 is far more than needed by your devices. Connect away!

banacan wrote:

Thanks for the reply.

When you say "Does the ... select DisplayPort" what do you mean? In Sound settings it lists the sound input as PHL 279P1 as DisplayPort type. Is that what you mean, if so, that's already selected.

Yes that is what I meant.

I have not tried another USB-C cable. I would need to purchase another one to try.

Try a USB-C to DisplayPort instead of USB-C to USB-C cable.

use a dual cable setup

Interestingly, I originally had my monitor connected HDMI to HDMI and USB-C to USB-C for the hub. It caused lots of display problems because it viewed the USB-C connection as a second monitor. Once I removed the HDMI cable it saw the USB-C connection as a single monitor, but I also apparently lost my audio.

That makes sense, the audio was using the HDMI connection.

So are you suggesting that I connect from the Mac Mini HDMI to the Philips DisplayPort, then the USB-C connection will not be confused as a second monitor? I'd be happy to try that but I don't want to purchase a HDMI to DisplayPort cable to find I have the same problem as before. Do you know how others have set this up so they don't have the "dual display" issue I had?

I never said any thing about an HDMI to DisplayPort cable. If you want to try a single cable, then try a USB-C to DisplayPort cable.

Thanks for your help.

You're welcome.

Also hcsitas makes a good point and suggestion.

Use Premium Certified HDMI cable for Video and Audio

Use a high speed USB 3.0 USB-A to USB-A cable for the hub.

That is good news, thanks for reporting back.

You're welcome.