usbd is supposed to be doing as you already mentioned and I least suspect it to be a problem.
It seems to me that this is a cable issue:
Whenever you used new cable the issue was solved.
cables after sometime loose their quality for several reasons.
Newer iPhones requires more stable current. (Needs citation!)
The new Macbook Pro 16" has problems with external displays connected to it, sometimes even just external hdd's or other thunderbolt devices.
Do you have external displays connected?
Basically the GPU will get pinned at 18watt+ and produce max heat on the right side of the laptop where it is located.
This will cause the laptop to go at 60 degrees C at ...
The first thing you should do is examine and clean the MagSafe connector, both on the cord and on the machine. MagSafe's have five spring loaded pins; if one of the pins is stuck, or grime is blocking a connection, that can cut the power output of the cord, meaning the computer will run but the battery won't charge. Apple says:
To clean the MagSafe ...
If you're experiencing issues with any of these, you might
need to reset the SMC.
Power, including the power button and power to
the USB ports
Battery and charging
Fans and other thermal-management features
Indicators or sensors such as status indicator lights (sleep
status, battery charging ...
Ended up solving this issue by installing Macs Fan Control app and setting the fan speed myself to 3000.
At idle now the CPU is at 65 degrees average at 3000RPM, without this the CPU would be at 60 degrees at 5500RPM. Fair trade until Apple figures out its thermal issues, this is almost certainly a bug in their thermal management (potentially a turboboost ...
Sounds very normal to me. The 16 is designed to drive massive GPU and CPU wattage for maximum performance as opposed to maximum thermal economy. It’s the polar opposite of the MacBook One / iPad Pro design.
This is almost certainly the design since Apple controls the thermal and power envelopes strictly when on and off charger. I would avoid the delay of ...
The maximum amount of power that your MacBook or Apple Display can provide depends on whether it has USB 2 or USB 3 ports.
USB 2 - 500mA
USB 3 - 900mA
See Using USB devices with your Mac for complete details.
System Information (Apple menu > About This Mac) can give you more details about USB power.
Current Available is the default amount of power ...
I have a Late 2013 MacBook Pro. The output with a iPhone 7 Plus connected to the USB 3 Left port is 1.8 Amps. Verified using a USB power meter dongle. This only happens once the iPhone has booted. Before booting, the iPhone takes only .38 amps.
System profiler shows the following:
Current Available (mA): 500
Current Required (mA): 500
**Extra Operating ...