Bug 112308

Summary: Screen flickering with 4k resolution on Prairie Falcon
Product: DRI Reporter: Kai-Heng Feng <kai.heng.feng>
Component: DRM/AMDgpuAssignee: Default DRI bug account <dri-devel>
Status: RESOLVED MOVED QA Contact:
Severity: not set    
Priority: not set CC: hugh.chao
Version: unspecified   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
kernel message with iommu
none
kernel message without iommu
none
fix test none

Description Kai-Heng Feng 2019-11-18 07:14:34 UTC
The issue is still there on amd-staging-drm-next branch.

The issue is gone with kernel parameter "iommu=off".
Comment 1 Kai-Heng Feng 2019-11-18 07:15:16 UTC
Created attachment 145984 [details]
kernel message with iommu
Comment 2 Kai-Heng Feng 2019-11-18 07:15:44 UTC
Created attachment 145985 [details]
kernel message without iommu
Comment 3 Alex Deucher 2019-11-18 16:34:17 UTC
Created attachment 145993 [details] [review]
fix test

Does this patch fix the issue?
Comment 4 Kai-Heng Feng 2019-11-19 04:43:26 UTC
(In reply to Alex Deucher from comment #3)
> Created attachment 145993 [details] [review] [review]
> fix test
> 
> Does this patch fix the issue?

No, the same issue persists.
Comment 5 Martin Peres 2019-11-19 10:02:29 UTC
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