Usb port stops working after a while on new 2020 mac book pro13, mac OS catalina 10.15.4

Be interesting to hear if it is the i7 model only being affected.

I doubt it is but would be good to get an idea of the devices used with the CPUs.

I have a replacement due to be sent out but I'm thinking I'm going to have to sacrifice size and buy the 16inch model just to get a stable machine OR use up 2 of my 4 thunderbolt ports by having it powered by the adapter AND having it also plugged into my monitor.

Not happy at all.

I use the laptop very sporadically on my lap or on the road. In that usecase I don't use hubs or other USB accessories. Because of the corana virus I work completely from home and than is a full set with monitor, ethernet, mouse and keyboard very welcome. Without these accessories it is actually not possible to work on the laptop all day.

I agree that a laptop problem should function freely without power adapter :-)

But it's still running fine with the apple powerbrick connected. But can be a coincidence

Has anyone else in this thread found this reported on any other forums?

I can imagine that this is just a random issue, surely it is pretty widespread.

I don't understand what is dofferent between the older MBPs other than the power draw on the CPUs.

Maybe it is pulling too much power that it doesn't have enough resevre to provide the TB ports.

https://youtu.be/thAzGF5zq44

All external usb-devices stops until i power-off / power-on the monitor, while there isn't any usb device connected to the monitor integrated hub. Even charging an apple watch stops. Disconnecting the USB hub has no effect.

Just to be clear; all devices (mouse, ubikey, apple watch charger) are connected to the separate hub / ethernet adapter and work smoothly. Suddenly things go wrong, the mouse stops, the apple watch charger is doing strange and the ubikey starts to flash. Disconnecting this hub has no effect as the video shows. The mouse does not work again until I switch the monitor (connected to USB-c) off and on. The internal ethernet adapter in the hub continues to work. Do you still get it?

Very weird issue

> Quick question that could be related somehow... when you shut your laptop down do you get a sudden bust from the fans?

No, I did not notice that.

I am active on the Dell forum. There are more Macbook users who experience problems with the integrated USB hub of the monitor. But assistance from Dell isn't great, they don't want to support Macbook questions and refer to this Apple support forum. So I don't really get on with that.

Honestly, I don't think it's a Dell problem either. My old Macbook 12" does not experience any problems with this setup while I have the same software, hardware and MacOs version.

Ok, well I have a swap that is due to arrive on the 23rd of June. I will try that machine with excactly the same set up and report back.

This is taking up so much of my time to troubleshoot. I've had too much faith in Apple products that I've doubted my own equipment first.

If you have any improvements or discover anything else, please feel free to pop it in here.

I hope everyone will report to Apple support so that they collect enough data to find a solution. The disadvantage of this kind of media attention is that everyone starts thinking 'they know enough' and are quietly waiting for a solution without reporting

I've read about this. Bit of an expensive fix.

One thing I am really struggling to unders tand is how this is only affecting the MBA and MBP 2020 models.

What did they change? If it is only affecting a this years models then surely that would rule out a OS fault.

Surely if it rules out an OS fault then it must be a hardware fault and if it is a hardware fault then there must be thousands of people with this issue out there.

I keep looking for a patch or fix to come out but I'm not confident it will be soon.

I refuse to buy an accessory at 10% of the price of a Macbook to get USB working. I bought a more expensive display with power delivery to keep the setup simple and minimal.

Which bother me that I don't hear anything from Apple anymore. I have a case open and it is completely radio silence

I've been keeping an eye on the news from everywhere waiting for this to pick up some pace to eventually get something done.

I can't see any annocements anywhere!

If anyone sees this that has connections to Apple Support, would you be able to confirm if this issue is being investigated?

I've just had the update come through on my Mac.

I will keep using the CalDigit hub for the time being.

Glad it has been resolved though. Shame they didn't come out and address it when it was first spotted.

Thanks for your help and the updates.

Quick question that could be related somehow... when you shut your laptop down do you get a sudden bust from the fans?