Even with nothing connected to USB and the Arduino IDE hidden, my Apple PowerBook battery drains fast, the fans are on, and the activity monitor shows Arduino uses 40% to 80% of CPU.
Is there a way to stop the energy drain?
I have a PC and am running the Arduino V2 beta. When I start the IDE, doing nothing with it, the Task Manager shows the IDE using 0% CPU. It takes a minute of so to settle down to 0% previous it was at about 5%
Not a Mac user so can't help; but it might help others if you can say which version of the IDE you're using.
1.8.13
I'm running Linux with 5.10 kernel, and arduino IDE 1.8.13, no devices plugged in. Mac is BSD under the hood, an OS very similar to Linux. I decided to check out what my system showed, and here is my process output:
$ ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
user 577071 0.0 0.0 6880 3332 ? S 20:56 0:00 bash /usr/bin/arduino
user 577082 **58.2** 1.7 8492216 322860 ? Sl 20:56 0:18 java -DAPP_DIR=/usr/share/arduino -splash:/usr/share/arduino/lib/splash.png processing.app.Base
It's showing 58.2% CPU usage for the process that is running the application's splash. Interestingly, that value seems to slowly go down over a few minutes, leveling around 5% after about 10 minutes of idle.
I don't know if this helps identify the OP's issue, but thought I'd try.
Thanks. In my case, on macOS laptops, the CPU usage remains very high for extended periods, even when the Arduino application is hidden, no microcontroller connected, doing nothing.
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