AnsweredAssumed Answered

My Ryzen x2700 get segfaults frequently and freezes during ruining simple python scripts and chrome

Question asked by moxiao2012 on Jan 10, 2019
Latest reply on Mar 8, 2019 by paul79

Hi everyone,

previously I was using ryzen x1700 and entered the infinite freezing loop... And later can't even fresh install operating system, due to freezing at installation process.... Now I bought a new x2700 and was OK for last two months. But recently again, the ubuntu starts freezing with really low load like 10% cpu load and 8GB ram usage (of total 64GB). Most of them happened when I run python script just using numpy, pymysql and pandas. This script is running without problem on server with intel and on laptop with intel. And I found in syslog many seg faults happening for cython and python3.5... First was thinking the freezing is caused by the power supply idle control or c state. After changing power control to typical current. It still freezed.

Besides, chrome always crash due to seg faults, too...

What should I do for it now? Is this still caused by the known issue from AMD ? Like this?https://community.amd.com/thread/223940

On google I can't find one post reporting for seg faults with x2700.

 

Found the first seg fault in the oldest syslog under /var/log:

Jan 4 13:30:25 ryzen kernel: [95172.438889] TaskSchedulerFo[30708]: segfault at 3faf06300e20 ip 000055ebf83cf522 sp 00007fbeb1f963f0 error 4 in chrome[55ebf6b7f000+66df000]

Jan 4 13:30:25 ryzen org.gnome.Shell.desktop[11695]: --2019-01-04 13:30:25-- https://clients2.google.com/cr/report

Jan 4 13:30:25 ryzen org.gnome.Shell.desktop[11695]: Resolving clients2.google.com (clients2.google.com)... 172.217.16.206, 2a00:1450:4001:81d::200e

Jan 4 13:30:25 ryzen org.gnome.Shell.desktop[11695]: Connecting to clients2.google.com(clients2.google.com)|172.217.16.206|:443... connected.

Jan 4 13:30:26 ryzen org.gnome.Shell.desktop[11695]: HTTP request sent, awaiting response... 200 OK

Jan 4 13:30:26 ryzen org.gnome.Shell.desktop[11695]: Length: unspecified [text/html]

Jan 4 13:30:26 ryzen org.gnome.Shell.desktop[11695]: Saving to: ‘/dev/fd/4’

Jan 4 13:30:26 ryzen org.gnome.Shell.desktop[11695]: 0KCrash dump id: e77f6458102e71b3

Jan 4 13:30:26 ryzen org.gnome.Shell.desktop[11695]: 2,34M=0s

Jan 4 13:30:26 ryzen org.gnome.Shell.desktop[11695]: 2019-01-04 13:30:26 (2,34 MB/s) - ‘/dev/fd/4’ saved [16]

 

 

some more syslogs for seg faults:

Jan 9 12:57:57 ryzen kernel: [69850.139234] python[9041]: segfault at 7f6596cf2910 ip 00007fe5c5d55b91 sp 00007fff5dff7a80 error 6 in multiarray.cpython-35m-x86_64-linux-gnu.so[7fe5c5c50000+14c000]

ryzen kernel: [71484.627801] python[9032]: segfault at 7f659adda9d0 ip 00005648e707d18d sp 00007fff5dff8280 error 6 in python3.5[5648e6fdf000+1be000]

Jan 9 13:37:14 ryzen kernel: [72206.876258] chrome[9886]: segfault at 2c361a680008 ip 000055815f343135 sp 00007ffdb3f56940 error 4 in chrome[55815db01000+66df000]

Jan 9 13:37:41 ryzen kernel: [72234.554665] python[9034]: segfault at 7f659a7c48d0 ip 00007fe5b86abca2 sp 00007fff5dff7880 error 6 in lib.cpython-35m-x86_64-linux-gnu.so[7fe5b8665000+7e000]

Jan 8 12:19:26 ryzen kernel: [436508.741981] traps: python[9666] trap stack segment ip:5569888c7b2c sp:7ffdcd04ab40 error:0 in python3.5[556988812000+1be000]

Jan 8 12:25:09 ryzen kernel: [436850.882310] python[9661]: segfault at 7f8a34ce97d0 ip 00007f0a5a9e2ca2 sp 00007ffdcd04b4b0 error 6 in lib.cpython-35m-x86_64-linux-gnu.so[7f0a5a99c000+7e000]

Jan 8 12:35:03 ryzen kernel: [437445.295717] python[10916]: segfault at 7f8a3bec2a30 ip 00007f0a6808cb91 sp 00007f0a4ac062e0 error 6 in multiarray.cpython-35m-x86_64-linux-gnu.so[7f0a67f87000+14c000]

 

 

For more details

Computer Type: Desktop

GPU: Nvidia GTX 1080TI

CPU: Ryzen x2700 part number: YD270XBGAFBOX (prev. Ryzen x1700)

Motherboard: Asus Crosshair VI Hero bios version 6401

RAM: Corsair Vengenance 16GB *4

Operating System & Version: Ubuntu 18.04 (prev. ubuntu 16.04)

GPU Drivers: 410.73

Chipset Drivers:

Background Applications: chrome/python 3.5(cython)

Troubleshooting: Prime95 running without problem for around 1-2 days. Iperf network test no problem with 1-2 days. Kill-ryzen no problem with 2 hours. Python Script is running without problem on intel laptop and intel server.

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