Built a small machine using an Asrock N100DC-ITX motherboard, it has an Intel N100 built in and I also have 1x NVMe and 2x HDDs. The board has a DC Jack so no external PSU.
First time I booted it, the NVMe had Opensuse on it so I played around a little, no problem. When I boot into BIOS also no problem.
When I boot into Unraid, there is a strange sound coming from the back of the board, sounds like an interference sound. I cannot tell if it’s coming from the ethernet port or from the power DC Jack. I think it’s from the power.
I recorded it with my phone and bumped the sound +20 dB, this is how it sounds like. You can hear the fans and that sound. soundcloud.com/user-300866676-719653331/n100-1 soundcloud.com/user-300866676-719653331/n1002
For power I tried using both an Intel NUC 65w power adapter and an Asus laptop 90w power adapter, the one Asrock recommends on their website. The system has been running for 1-2days, with 4 containers and Home Assistant VM, it idles at around 16w. Without Home Assistant, it drops to 11w.
Any idea what that sound is?
snekerpimp@lemmy.world 11 months ago
Sounds like coil whine.
OrangeCorvus@lemmy.world 11 months ago
I thought about it but wasn’t sure. Maybe it’s coil whine coming from the DC plug. Bought the board end of October so I cannot return it anymore. Any tips on how to improve it? Still it’s strange that it’s only doing it in Unraid. In Opensuse I tried to push the system but there was no sound, it just worked. That’s what throws me off.
snekerpimp@lemmy.world 11 months ago
Don’t know man. I have a 10gb nic that makes different noises depending on if it’s passed through to opnsense or Debian.
MaggiWuerze@feddit.de 11 months ago
Why wouldn’t you be able to return it if it shows signs of malfunction within a year?