new Pinebook Pro making occasional noises

[kozak]

Dear all,

I've gotten my hands on a new Pinebook Pro with the pre-installed Manjaro ARM recently. I've been working on it for a few days now and it suits my needs very well.

However, occasionally (I haven't managed to figure out a pattern yet), the laptop starts making weird noises: either a fairly loud "knack" (as if someone closed the lid with force) or a longer higher pitched tone which ends with a "knack". Then I can go on working on the machine for e.g. 20 minutes without any issues until all of a sudden it again makes one of the noises described above.

1. Is/has anyone encountering/encountered the same phenomenon? If this is a known issue, is there a fix for that?
2. Is this software or hardware related? What information do you need from me to evaluate that/narrow down the problem?

In the end I need to know, whether I can fix this myself or whether I need to file a warranty case with PINE.

Thanks in advance for your help!

[LivingLinux]

You can try this: https://forum.pine64.org/showthread.php?...#pid113331
Or play an inaudible sound. https://www.reddit.com/r/PINE64official/...d_its_not/
I'm guessing it will impact battery life, but I don't think it will be much.

[kozak]

You can try this: https://forum.pine64.org/showthread.php?...#pid113331

Thanks for pointing me to that thread & particular post.
I did not try the wireplumber hack but settled with changing the audio output to headphones. That solves the issue for my use cases.
Thanks for your help!