MacBook Professional (13”, late 2011); Reminiscence 4GB; Processor 2,4Ghz Intel;
Graphics Intel HD; Mac OS Sierra 10.12.6; Energy adapter authentic 60W (obtained 2 of them); Battery new.
This difficulty has been reported earlier than (MacBook Professional 2011 gradual) and gave the impression to be solved for the reason that Mac was working positive for 3 days. Earlier than the issue solely occurred when the battery was practically 100% charged with the ability adapter related.
Here’s what occurred afterwards:
- When the battery is charging whereas having the ability adapter related, the Mac all the time will get very gradual.
- The exercise monitor is displaying kernel CPU utilization of as much as 500%, the system is working at ~93%, consumer load is regular =/< 8%. All different processes are regular.
- The exercise monitor will not be displaying any processes with extreme vitality consumption. Reminiscence consumption is regular too. The CPU goes again to regular instantly when on Battery solely, with the Energy Adapter disconnected. Inside a minute after connecting the ability adapter the sport begins yet again.
- No distinction with completely different energy adapters.
- Typically it takes some time earlier than the inexperienced or orange LED from the Energy Adapters connector is arising.
A few completely different exams have been carried out, all finished with out third celebration {hardware}, nothing related, not even LAN. Software program which had kernel extensions in Library/LaunchDaemons earlier than, was utterly eliminated.
Checking the System load whereas on Battery: pmset -g sysload
- 2025-01-02 15:34:49 -0300
- mixed degree = OK
- consumer degree = OK
- battery degree = OK
- thermal degree = Nice
Checking once more whereas on Energy Adapter with the CPU throttling: pmset -g sysload
- 2025-01-02 15:36:19 -0300
- mixed degree = Unhealthy
- consumer degree = OK
- battery degree = Nice
- thermal degree = Unhealthy
Checking the thermal log whereas on Battery, no issues: pmset -g thermlog
- Word: No thermal warning degree has been recorded
- Word: No efficiency warning degree has been recorded
- 2025-01-02 15:56:26 -0300 CPU Energy notify
- CPU_Scheduler_Limit = 100
- CPU_Available_CPUs = 4
- CPU_Speed_Limit = 100
Checking once more whereas on Energy Adapter with the CPU throttling: pmset -g thermlog
- Word: No thermal warning degree has been recorded
- Word: No efficiency warning degree has been recorded
- 2025-01-02 15:58:25 -0300 CPU Energy notify
- CPU_Scheduler_Limit = 40
- CPU_Available_CPUs = 4
- CPU_Speed_Limit = 29
Afterwards TG Professional was put in displaying regular temperatures on a regular basis. The fan pace was adjusting effectively to CPU hundreds. The fan and outlet are additionally clear. Adjusting the fan pace to max when the issue occurred made no distinction. It’s also not attainable to sense any extreme warmth when touching the Mac.
The one method to get the CPU again to regular is disconnecting the Energy Adapter and the system load drops instantly. A SMC reset is fixing the issue for the second till the battery is charging once more whereas the Energy Adapter is related.
The System Report is displaying a destructive mA studying whereas on battery energy solely which seems unusual.
In Protected Mode the Mac continues to be working positive underneath any energy provide situation. Anyhow, after shutting down from Protected Mode and rebooting the issue comes again.