Bug 111232 - 3200 Memory Crash My System
Summary: 3200 Memory Crash My System
Status: NEW
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/AMDgpu (show other bugs)
Version: unspecified
Hardware: x86-64 (AMD64) Linux (All)
: medium major
Assignee: Default DRI bug account
QA Contact:
Depends on:
Reported: 2019-07-27 14:51 UTC by bibitocarlos
Modified: 2019-09-17 13:38 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

dmesg (869.13 KB, text/plain)
2019-07-27 14:51 UTC, bibitocarlos
no flags Details
dmesg (352.21 KB, text/x-log)
2019-09-10 12:37 UTC, bibitocarlos
no flags Details

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Description bibitocarlos 2019-07-27 14:51:37 UTC
Created attachment 144891 [details]


Since 5.2 kernel, my system (raven ridge 2400G,  Asrock X470 Gaming-ITX/ac, latest bios, archlinux) crashes (black screen or green screen or flickereing screen at start). I identified the issue with my RAM's speed, which is shared between the GPU and CPU.
Everything above 2133Mhz crashes.
I dont have this issue with 5.1 kernel.
Dsmeg of the crash as attachment

Comment 1 Alex Deucher 2019-07-29 15:58:22 UTC
Can you bisect?
Comment 2 bibitocarlos 2019-07-29 23:18:16 UTC
(In reply to Alex Deucher from comment #1)
> Can you bisect?

I'm gonna try ^^, never did it before and leave to holydays Friday.
I'm gonna start with RC, then whith commits.
You think it's a proper way ?
Comment 3 bibitocarlos 2019-09-02 01:53:24 UTC
Ok, back from holidays.
Just compiled 5.12 RC1 and it doesnt work, green screen.
Any idea which commit i should test ?
Comment 4 bibitocarlos 2019-09-08 02:02:26 UTC
I have finished bisecting.
This is the commit which created the bug : 
" Bissection : 0 révision à tester après ceci (à peu près 0 étape)
[005440066f929ba0dca8f4e0aebfbf8daac592cc] drm/amdgpu: enable gfxoff again on raven series (v2)"

What do i do next ?

Comment 5 bibitocarlos 2019-09-08 02:09:22 UTC
Seems to be related to this bug: 
Comment 6 bibitocarlos 2019-09-09 01:33:56 UTC
Tried amd.iommu off but doesnt work, so it's something else.
Comment 7 bibitocarlos 2019-09-10 12:37:23 UTC
Created attachment 145321 [details]

Tried this "amdgpu.ppfeaturemask=0xffff3fff" but iit doesnt work (from here: https://bugzilla.kernel.org/show_bug.cgi?id=204689).

Add new dmesg to check firmware version
Comment 8 bibitocarlos 2019-09-14 15:13:21 UTC
And cant revert the commit with 5.3, i get git conflict...
Comment 9 Andrey Grodzovsky 2019-09-16 18:10:24 UTC
I noticed IOMMU page fault in the log  - is disabling iommu helps ? (from grub cmdline add iommu=off)
Comment 10 bibitocarlos 2019-09-17 13:38:49 UTC
Tried with "iommu=offiommu=off amdgpu.ppfeaturemask=0xffff3fff", no change, green screen.

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