On Wed, 12 Jul 2017 12:39:19 +0200,
Bruno Friedmann wrote:
Testing openSUSE Leap 42.3 on one of my system, I've seen a hard lockup of the
kernel happening for all of them superior to 4.4.72 version.
Before filling up a bugzilla entry, I would like to confirm the symptom.
Motherboard is a ASUS CROSSHAIR V FORMULA-Z, BIOS 2201 03/23/2015 (latest
The CPU is an AMD FX(tm)-8350 Eight-Core Processor
With 4.4.72 everything was working (since years the hardware was used before
with 13.1 and 42.1).
Since kernel 4.4.74 with iommu enabled in bios, I got freeze, like one of the
trace I finally found in journal. (Attached)
Today I retry with 4.4.75 and get immediately after the system is online a
AMD-Vi buffer timeout error.
I since then disabled iommu in the bios and the computer doesn't show bugs.
I know there was a kernel-firmware and ucode-amd update between the 4.4.72 and
Could you drive me to find the right culprit or confirm the problem ?
So I can build a nice and complete bugzilla report.
Don't worry, the information above sounds enough good as a bugzilla
report :) If you already figured out about the involvement of iommu,
we can start looking at it.
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