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#1 2018-12-01 22:56:34

cuteclown
Member
Registered: 2017-09-18
Posts: 23

Random restarts

My system crashes randomly. I have a Ryzen 5 1600 processor with 8GB of RAM. I have uploaded the output of journalctl to pastebin: https://pastebin.com/E1iz2dcM. The sudden reboot happened at around 23:24, and I have cut the log from there. The weird thing is that the log just shows "-- Reboot --" at the top...

I would love to figure this out, since it's very annoying (I have this more, maybe about once or twice a day. Hard to say since I don't use my desktop that often). I don't really have a clue where to start except posting this here.

I hope someone can help in any way.

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#2 2018-12-01 23:33:31

loqs
Member
Registered: 2014-03-06
Posts: 6,386

Re: Random restarts

cuteclown wrote:

The weird thing is that the log just shows "-- Reboot --" at the top...

See https://github.com/systemd/systemd/blob … tl.c#L2551 it indicates the journal detected a change in boot.
The journal leading up to the hang may provide more information than the journal after the hang.

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#3 2018-12-01 23:47:46

cuteclown
Member
Registered: 2017-09-18
Posts: 23

Re: Random restarts

But the crash/reboot happened at 23:24, and the most recent entry before the reboot is from 22:54... Is it still useful?

Anyway, complete log can be found on: https://pastebin.com/tB4V6ce3

Last edited by cuteclown (2018-12-02 00:15:20)

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#4 2018-12-01 23:57:11

WorMzy
Forum Moderator
From: Scotland
Registered: 2010-06-16
Posts: 8,405
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Re: Random restarts

Please describe the symptoms of the crash. Presumably something happened during the 30 minutes between the log entry and you rebooting that made the disk unwritable, or the journal process stop working. Were you able to switch to a TTY? Was there any useful information in dmesg?

I note that your filesystem didn't get fscked during the next boot. Why is this?

This stands out to me, after the reboot:

Dec 01 23:23:57 T410 kernel: mce: [Hardware Error]: Machine check events logged
Dec 01 23:23:57 T410 kernel: mce: [Hardware Error]: CPU 2: Machine Check: 0 Bank 5: bea0000000000108
Dec 01 23:23:57 T410 kernel: mce: [Hardware Error]: TSC 0 ADDR 1ffff9a753bf0 MISC d012000101000000 SYND 4d000000 IPID 500b000000000
Dec 01 23:23:57 T410 kernel: mce: [Hardware Error]: PROCESSOR 2:800f11 TIME 1543703030 SOCKET 0 APIC 2 microcode 800111c
Dec 01 23:23:57 T410 kernel:   #3  #4  #5  #6  #7  #8  #9 #10 #11

It suggests you have faulty hardware. I'm not too familiar with mce event diagnostics, but there is a wiki page about mce event logging: https://wiki.archlinux.org/index.php/Ma … _exception


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#5 2018-12-02 00:29:12

cuteclown
Member
Registered: 2017-09-18
Posts: 23

Re: Random restarts

WorMzy wrote:

Please describe the symptoms of the crash. Presumably something happened during the 30 minutes between the log entry and you rebooting that made the disk unwritable, or the journal process stop working. Were you able to switch to a TTY? Was there any useful information in dmesg?

Sorry, I described the crash as a hang in my last post, but this is not correct. I noticed that my screen went black for a few seconds. Within a few seconds the system booted again, and I was looking at my empty desktop wallpaper. So I couldn't switch to a TTY.

I have collected the output from dmesg https://pastebin.com/YmzuMKjV, but don't know what to look for, or how to interpret the output, or if this is even the right output (hard to say without a timestamp). It's possible that this is just the data from everything after the reboot.

The page you're linking to mentions the rasdaemon AUR package, which I didn't have installed. I installed it. If a similar crash happens again I will have more information.

I note that your filesystem didn't get fscked during the next boot. Why is this?

I have no idea...

This stands out to me, after the reboot:

Dec 01 23:23:57 T410 kernel: mce: [Hardware Error]: Machine check events logged
Dec 01 23:23:57 T410 kernel: mce: [Hardware Error]: CPU 2: Machine Check: 0 Bank 5: bea0000000000108
Dec 01 23:23:57 T410 kernel: mce: [Hardware Error]: TSC 0 ADDR 1ffff9a753bf0 MISC d012000101000000 SYND 4d000000 IPID 500b000000000
Dec 01 23:23:57 T410 kernel: mce: [Hardware Error]: PROCESSOR 2:800f11 TIME 1543703030 SOCKET 0 APIC 2 microcode 800111c
Dec 01 23:23:57 T410 kernel:   #3  #4  #5  #6  #7  #8  #9 #10 #11

It suggests you have faulty hardware. I'm not too familiar with mce event diagnostics, but there is a wiki page about mce event logging: https://wiki.archlinux.org/index.php/Ma … _exception

I've heard people with similar symptoms on Ryzen CPU's, and hope that the hardware is not the problem.

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#6 2018-12-07 01:37:26

qrwteyrutiyoup
Member
From: Canada
Registered: 2017-12-26
Posts: 16

Re: Random restarts

cuteclown wrote:

My system crashes randomly. I have a Ryzen 5 1600 processor with 8GB of RAM. I have uploaded the output of journalctl to pastebin: https://pastebin.com/E1iz2dcM. The sudden reboot happened at around 23:24, and I have cut the log from there. The weird thing is that the log just shows "-- Reboot --" at the top...

I would love to figure this out, since it's very annoying (I have this more, maybe about once or twice a day. Hard to say since I don't use my desktop that often). I don't really have a clue where to start except posting this here.

I hope someone can help in any way.

Looking at your logs (the MCE hardware error lines), you seem to have the "random reboots at idle" issue that plagues the 1st Ryzen generation.

Two things to try:
1) BIOS/UEFI update. Look for an option called "Power Supply Idle Control". If it exists, set it to "Typical current idle", instead of "Auto"

2) The previous option should resolve the issue, but you may also try a a software like https://aur.archlinux.org/packages/ryze … zator-git/

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