MacBook Pro M4 with thunderbolt 5 and portable monitor

Thanks for the info Grant, but I can’t seem to find any reports of how much power my monitor is requiring. 

The first picture shows my M2 pro, which although is powering my monitor, the only reports are of a Keyboard requiring 100 mA, and a mouse requiring 100 mA. 

The second picture shows my M4 pro, which shows a keyboard requiring 98 mA. My M4 is connected to the same monitor but is being powered separately. If I was to disconnect the external power I couldn’t see anything even if there was something to see. 

If I click on Thunderbolt/USB4 I get the same result as dragos, No device connected

Have they comeback to you with a fix or at least an ETA? I just faced the same issue

I connected the Mac mini to the hub using the supplied cable - it's the only way I could connect it.

When I connected the monitor to the hub using the alt DP port, I initially saw this...

Then this...

It was only when I then connected the monitor to the hub with HDMI that it worked!

Bit of a mystery!

Trouble is, this is no better that using the TB5 and HDMI port directly on the Mac mini!

Same problem here, this is absolutely wild that something so straight forward has been broken with new models

unreal

bump

I have spent about 16 hours total now trying to find a way to simply be able to connect external displays with just one usb-c cable per display (power and a/v) to my MacBook Pro M4 Max with no success. I can do this with a MacBook Pro M1-4 non-pro/max chip computer without ThunderBolt 5 ports and am so disappointed that this appears no longer to be possible; Apparently the TB5 ports don't provided sufficient power any longer as with my 10+ year old POS MacBook Pro... I have ongoing cases with Apple at the moment but it seems they are just humoring me. Currently, without a docking station, I can only get ONE display to connect as long as I'm providing external power—a second monitor is not permitted. I have sent videos and logs. Seems like a step backwards...

I travel for work and in the airport, I need to be able to function without plugging into an outlet and pack up quickly. Anyone else find a solution? Below is my preferred setup when traveling (really at home even) and was my 14" MacBook Pro M2 with L Limink detachable 14" monitors with only 2 USB-C 4 cables...

Same. I have probably wasted enough work time trying different cables and monitors to pay buy another MBP…

Still no word? I know nothing about programming and still it seems like a light fix. I have having the 2 cables.

please helppppo

Just got a MBP M4 and seeing the same issue. Any updates? Thanks!

I recently upgraded my Mac as well and was having the same issue. I have no clue what happened or what I did but both now are working and functioning with a single USB-C and no need for the mini HDMI. I just unplugged them and used it to game through my PS5. When I was done, I connected the one that was not working, and it finally came on. I said what the heck and decided to plug in the second one, and it came on with no issue. I work in IT, so this checks out as a fix haha, if you work in IT you'll get that joke. I honestly changed nothing and downloaded nothing. I wish I could say I did so I could help you all out but I have no clue what changed to make this work, and above is exactly what I did.

For sake of argument, have you taken your Mac to a Best Buy to see if any other monitors work better?

It could be there is a needed firmware update, or something has worn.

For sake of argument, have you made a copy of an older operating system to see if indeed it is the OS update which is incompatible as you claim?

You can use internet recovery to install an older OS on a separate partition of your Mac, the OS that shipped with the Mac.

Grant has a good point. The System Profiler makes it obvious why some of these issues exist.

USB/Thunderbolt is still serial. If you know anything about serially connected electronic devices they all work based on the weakest link of the chain. Have webcam in the mix? Its power will bring down the whole bus to the lowest power speed denominator. Have a USB-2 cable on one bus of the CPU, that's all the speed you'll get from the device. Wall powered hubs and docking stations help alleviate power drains on the built-in USB bus of the computer.

When Apple first adopted USB-C in 2016, I was stunned how a bus powered external hard drive was never seen through the hub, unless it had enough power passing through.

So dig through the profiler closely to see what's draining power and speed.

in that presentation, click graphics/displays to see what port and what rules {thunderBolt, USB, other} are governing that display.

then go to that port and see what's up.

You have not talked about ONE specific model display, so all we can do is talk generalities so far.