I have an Ubuntu 20.04 headless server with Cockpit as a management tool, it's been running fine for a few months since I built it until yesterday when I came home to find it beeping. Two short beeps repeated.
The server continues to run and perform as expected, there are no errors in the logs I can check via Cockpit. I shutdown and booted Memtest86 to check it wasn't a memory issue and the RAM passed the tests (I did only run 3 of 4 as it took over an hour). I reseated the RAM before I did the test.
I did a full power down and it stopped the beeping for 24 hours, but it's come back again. I also tried using a different plug socket, though I didn't expect this to do anything.
My hardware is:
- AsRock H470M-ITX motherboard
- Intel i5-10600
- 2x Integral IN4T8GNELSI 8GB DDR4 RAM 2666MHz
- 1x Samsung Evo 970 Plus
- 1x WD WD20EFRX-68E
- In RAID 5: 2x WD WD40PURZ-85T, 1x WD WD40PURX-64G
- InWin IW-MS04 case with Mini-SAS 6Gb/s SFF-8087 backplane
Software:
- Cockpit
In docker:
- Plex
- Nextcloud
- Nginx Proxy
Some hints as to where to look for errors, or what could be causing it would be extremely helpful. Also it's worth saying I didn't install a beeper and I believe the board doesn't have one built in.