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Journeyman III
Journeyman III

linux crashes


Is anyone else experiencing "black screen" crashes under Ubuntu 17.04 with their Ryzen 1700?  Under regular load my 2 day old system (Asus Prime 370 pro, Ryzen 1700 and Corsair 3200 Ram - underclocked to < 3000 due to stability issues!) performs better than my aging I7 2600K (stable @ 4.2Ghz) in most benchmarks, as soon as I try to put on any load e.g. Video transcoding via handbrake the screen goes black and USB keyboard and mouse power off - the PSU still runs as if the system is on until the power button is held off for several seconds... 

I've heard rumours that early Ryzen 1700 processor had some hardware issues with Linux that were not correctable with firmware or microcode updates, I hoped that I'd left my order long enough that I would not have that issue - but now worry I've received a dud!  Would appreciate any advice in diagnosing the issues as my system is not usable for any thing more than basic web browsing right now and cannot handle the loads I used to throw at the I7 2600K without issue before. 

I am seriously considering sending the components back - but would rather persevere if there is a possibility I can manage to get things working as overall performance looks to be better...    I have tried several tweaks based on forum advice such as disabling cstates, cpu offsets etc as well as installing newer linux kernel versions (currently at 4.10.1-041001) but so far the system is completely unable to handle being loaded up compared to my previous system that was stable even with a 23%+ overclock...

Many thanks for any ideas/advice!


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3 Replies
Adept II
Adept II

Re: linux crashes

I would try using ukuu to install the latest 4.12 series kernel and see if it helps (you can also try 4.13 final, which was released yesterday).

The hardware issue was generally observed on gcc workloads and from what I understand, only caused random segfaults, not the type of behavior you described. But, there was a script made called to test if you have an affected processor.

Journeyman III
Journeyman III

Re: linux crashes

Thank you for the help here!  I've tried updating to the 4.13 kernel but unfortunately have the same stability issues, will try experimenting with lowering memory speed further to see if that helps at all.

I tried the kill-ryzen script tonight and unfortunately it failed after running for just over an hour so it looks like I did get one with the hardware issue, i.e.

Linux simon-MS-7750 4.13.0-041300-generic #201709031731 SMP Sun Sep 3 21:33:09 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

cat /proc/sys/kernel/randomize_va_space


Using 2 parallel processes

[KERN] -- Logs begin at Mon 2017-09-04 21:16:03 BST. --

<snipped firewall activity>

[KERN] Sep 04 21:20:51 simon-MS-7750 kernel: zram: Added device: zram0

[KERN] Sep 04 21:20:51 simon-MS-7750 kernel: zram0: detected capacity change from 0 to 68719476736

[KERN] Sep 04 21:20:52 simon-MS-7750 kernel: EXT4-fs (zram0): mounted filesystem with ordered data mode. Opts: discard

[KERN] Sep 04 21:20:52 simon-MS-7750 kernel: nf_conntrack: default automatic helper assignment has been turned off for security reasons and CT-based  firewall rule not found. Use the iptables CT target to attach helpers instead.

[loop-0] Mon Sep 4 21:21:32 BST 2017 start 0

[loop-1] Mon Sep 4 21:21:33 BST 2017 start 0

[loop-1] Mon Sep 4 21:55:26 BST 2017 start 1

[loop-0] Mon Sep 4 21:55:27 BST 2017 start 1

[KERN] Sep 04 22:23:22 simon-MS-7750 kernel: show_signal_msg: 31 callbacks suppressed

[KERN] Sep 04 22:23:22 simon-MS-7750 kernel: genautomata[6530]: segfault at bd ip 0000000000430210 sp 00007ffc936c3628 error 4 in genautomata[400000+4c000]

[loop-0] Mon Sep 4 22:23:32 BST 2017 build failed

[loop-0] TIME TO FAIL: 3720 s


Running a quick check of /proc/cpuinfo gives me the following info -

model: 1
model name: AMD Ryzen 7 1700 Eight-Core Processor
stepping: 1
microcode: 0x8001126

Not sure whether this is a stepping and microcode version known to have the issue but thought I would share the info.

And my BIOS is

DMI: System manufacturer System Product Name/PRIME X370-PRO, BIOS 0810 08/01/2017

As I do use the system for software development I'm now a little concerned that I may run into other issues as a result of the bug, I will check with Amazon to see what options I have.

Thanks again for the help here!

Kind regards


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Adept I
Adept I

Re: linux crashes

This reeks of bad ram (or ram not seated all the way).  Try memtest overnight for 3-4 passes and if you're "checking stability" use stock jedec of 2133, don't just downclock a little.

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