It could be something else then ? After applying the fix on several
machines, I have no freezes to report, more than 1 month of uptime, it
looks rock stable. Did you also disable ASLR ? Also I compiled a kernel
from git.kernel.org as suggested in the tutorial, not Ubuntu Kernel.
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If you rely on the boot option "rcu_nocbs=0-15" you also need to reboot
to enable it.
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Title:
Ryzen 1800X freeze - rcu_sched detected stalls on C
No "processor.max_cstate=1" is not necessary. I'd also suggest to double
check that your motherboard bios is up to date. If it persists I'd try
with a more recent kernel (I'm using 13.6) because IIRC the rcu options
where a little bit different in earlier versions of 4.13.
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YES the boot option alone has no effect, you must also compile the
kernel with CONFIG_RCU_NOCB_CPU. You should be fine now (I have this
confirmed on several different configs). Here's a tutorial:
http://blog.programster.org/ubuntu-16-04-compile-custom-kernel-for-ryzen
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Almost 1 month of uptime, it looks solved.
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Title:
Ryzen 1800X freeze - rcu_sched detected stalls on CPUs/tasks
To manage notifications about th
I've added "rcu_nocbs=0-15" to the kernel boot parameters this morning
(along with "processor.max_cstate=1" last week), will update if a new
freeze occurs.
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It seems that this problem is widespread, and is not related to
https://bugzilla.kernel.org/show_bug.cgi?id=196481 which is linked in
this thread.
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Ryzen CPUs manufactured before week 24 of this year were known to have
issues (especially the segfault issue). It was officially fixed for all
ryzen manufactured after week 30. All my ryzen are pre-24 CPUs and they
all have this silent crash issue. Does it also happen with the post week
30 ryzen ?
Hi,
I'm getting the same issues on several identical builds, with an ASUS prime
X370-PRO motherboard.
It's very hard to analyze since it happens randomly every other week, and it
leaves no logs. It seems that the freeze happens at idle after very high memory
load (observation after logging CPU a
