I'm struggling to find the reason why my Ubuntu server hangs/crashes.
I have installed a barebone Ubuntu Server 20.04.2 LTS on my old computer to try and use it as a personal server to host some projects of mine.
My issue is after a few hours, sometimes as low as 2 to 3 hours or as long as 8 to 12, my server will eventually hang.
I get a visual output, but it is completely unresponsive to either keyboard, mouse or ssh. Sometimes it will log
CPU #X stuck for Xs! but never seems to be coming from the same place. Sometimes
Other times I get just no visual output at all and just have to force a reboot.
So currently running on my server are:
- Docker container with nginx reverse proxy
- Let's encrypt docker container
- 2 Nextcloud docker containers
- around 5 other docker containers running small apps/web apps
What's puzzling me the most is I get not logs at all, I've checked my kernel and system logs and usually the last line is an unrelated
UFW block command of some spammer ip address but nothing more substantial. I've also tried looking at
/var/crash/ but same thing, either empty or the log of my reboot.
I've looked around this website and people usually seem to indicate this might be a hardware issue but I've never had an issue running this system overnight on Windows 10 when it was my main setup.
What I've tried:
- Multiple clean reinstall of Ubuntu Server 20.04.2
- Updated my BIOS and removed any overclock I might have applied
- Checked my temperatures and system load, both OK
- Checked my RAM with Memtest86 for 3x4 runs, totalling over 12 hours and got no errors
My system specifications are:
Ryzen 1700 @stock 16 GB CORSAIR GDDR4 @2133MHz but rated for 3200Mhz MSI B350 Gaming PLUS MOBO Gigabyte GTX 1080 Samsung 960 EVO 512GB nVme SSD 650W corsair power supply Plenty of cooling
If any of you has any lead or advice on how to diagnose my setup, or some more steps I could try I would be grateful.
Thanks for your help
After some more digging about ubuntu ryzen and freezes, I came across this thread on AMD forums. This suggests that there are issues with the C6 state on ryzen 1st gen. Their advice is to switch the power state in BIOS to
Typical Current Idle which apparently has an impact on C6 state. I'll try that and see if anything changes.