Ubuntu 16.4 freezes

Asked by Roger Irwin on 2018-07-09

I have a computer that runs Ubuntu 16.4 server that freezes after it's been running for a day or so. Sometimes up to a week. When it's locked up it's totally non responsive and buttons like caps lock don't work and it doesn't produce a kernel panic on screen or any kind of error in the syslog.

I have run a memory test and used the Intel SSD tool but neither report any faults. Usually when I've seen memory or drive faults in the past I get a kernel panic but I'm getting nothing. Just the normal system message "Ubuntu 16.4 hostname tty1".

I don't think it's over heating either as programs like stress don't cause it to fail and it runs on 100% CPU usage for hours just fine.

Any other ideas or suggestions on where to look next?

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Are there any blow capacitors on the motherboard?
Can you SSH to the system when it locks up?

Roger Irwin (rogirwin) said : #2

No, I can't SSH or even ping it. It's totally non responsive.

It doesn't respond to input through the network interface, keyboard or serial port.

All the caps on the board look fine. It's a reasonably new Gigabyte board.

Do the previous log files show what is going on in the system?

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