Here’s another thing I found out:
Connecting the left half to the right half using the bridge cable also makes the loud high-pitched noise immediately appear despite no change in LED brightness.
Steps to reproduce:
- Use left half standalone: disconnect from USB-C and also don’t connect to the right half
- Connect right half to USB-C
- Set LED brightness to 255 for both USB-powered and battery-powered
→ I don’t really hear noise from the left half unless I get really close - Now connect the left half to the right half using the bridge cable
- As soon as you connect the two halves, there is immediately a relatively loud high-pitched sound
- Disconnect the halves and the noise is immediately gone, despite having the same LED brightness
So this must be more than just the LED brightness.
I hope this can be fixed in software. It’s unbearably loud and headache-inducing.