I am having issues with my MBP 2016. Mojave 10.14.6
I can't run the charger and an external monitor at the same time without CPU limiting.
I am monitoring with Terminal pmset -g thermlog The ambient temperature is around 27°C.
If I have the charger and a monitor at the same time, even at startup, the CPU_Speed_Limit kicks in and settles pretty quickly at 26% CPU_Scheduler_Limit at 40% and fans at full speed.
If I charge fully and run on battery then I can run the 2nd monitor. I have a thunderbolt display and a portable USB-C display and the issue is the same with both - this issue started after I was using both at the same time but is now with either one plugged in.
I have the MacBook with the back raised so that the vents are clear, it's on a solid desk and pointing an external fan at the back has no effect.
Following articles from the internet I have varied the ports used - left / right to no effect. I have also reset the SMC, [shift-ctrl-option power 10 secs release, restart].
So, two questions.
1. How do I know the SMC reset was successful, there's no feedback?
2. What else can I do to diagnose or resolve the issue?
I can't run the charger and an external monitor at the same time without CPU limiting.
I am monitoring with Terminal pmset -g thermlog The ambient temperature is around 27°C.
If I have the charger and a monitor at the same time, even at startup, the CPU_Speed_Limit kicks in and settles pretty quickly at 26% CPU_Scheduler_Limit at 40% and fans at full speed.
If I charge fully and run on battery then I can run the 2nd monitor. I have a thunderbolt display and a portable USB-C display and the issue is the same with both - this issue started after I was using both at the same time but is now with either one plugged in.
I have the MacBook with the back raised so that the vents are clear, it's on a solid desk and pointing an external fan at the back has no effect.
Following articles from the internet I have varied the ports used - left / right to no effect. I have also reset the SMC, [shift-ctrl-option power 10 secs release, restart].
So, two questions.
1. How do I know the SMC reset was successful, there's no feedback?
2. What else can I do to diagnose or resolve the issue?