MacBook Pro 16 usb-c charging issue

Most displays are underpowering, at less than the 96 Watts required to charge-and-run that 16-in MacBook Pro.

Use the power adapter, plugged in first, and it should preferentially charge from the power adapter.

I have same issue, my external monitor is "LG 27UK850-W 27" 4K UHD IPS Monitor with HDR10 with USB Type-C Connectivity and FreeSync

" I connect my monitor through USB-C cable, after close the macbook lid, supposedly macbook goes to sleep mode, but then after open the lid again, my external monitor doesn't show anything and the macbook monitor flickering as soon move my finger in the trackpad

Any update with this, i would not want to return the macbook, but if issue continue i will?

I have the same issue, although I'm using Thunderbolt 3 cable with Dell U2718Q 4K monitor and powering computer through a dongle with PD charging. Will try to reproduce without the dongle.

Restarting computer helps, but it's annoying.

I'm having the same issue. Plugged in and not charging or charging very slow. Got an awful pixelated rainbow screen thing (likely gfx card?) error on an external monitor during reboot. In general, catalina has been running like ****. I spent way too much money to deal with this.

A monitor shows images. A charger provides power to a battery. Which one makes more sense to charge an MBP?

If you want a an MBP battery charger that also has a very fine image display capability, talk to Samsung, LG, etc.

Hi Steve, I think what I'm trying to get to is my previous setup, which is my monitor that also charges my MBP as I'm working. This required one less cord attached to my computer, which is the battery charger. Now that I have a new MBP 16, it no longer charges my MBP. Cheers.

I figured up, that maybe the monitor doesn't give enough power to the MBP, so I connect as well the charger. But issue still occurring some times, after the MBP goes to sleep mode, when is back, external monitor doesn't show nothing and I have to restart the MBP. One solution I found was, disable sleep mode to the MBP, never goes to sleep, so is not happened any more.

avieyto--

to get a Mac display to become active, you need the Mac to query the display, and the display to answer with its name and capabilities. Otherwise, the display will not be shown as present, and no data will be sent to the display.

This query is only sent at certain times:

• at startup

• at wake from sleep

• at insertion of the Mac-end of the display-cable, provided everything on that cable is ready-to-go

• on invoking Option-(Detect Display) button in Displays preferences

so try doing some of those things and see if the display comes alive.

Modern Displays with multiple ports are sometimes busy scanning the other ports, looking for an input, and miss the query from the Mac. They need to pay attention to the port you are actually using, or they will miss the query.

Some displays have On-Screen Display settings that can be used to tell the display a computer is attached on a certain port, or a certain port should be highest priority. Changing those may make your display more responsive.

Some displays include their own private "sleep" settings for the display alone. This can allow the display to enter its own sleep mode, on top of the Mac's not sending it data. A display that is sleeping on its own cannot respond to the Mac's query, and will stay dark.

It's really disappointing that my monitor no longer has the power to keep my 16" charged. Curious, are their monitors out there that do have the power required to charge the MacBook Pro?