Messages in this thread | | | From | Kai-Heng Feng <> | Subject | [BUG] "Pre-boot DMA Protection" makes AMDGPU stop working | Date | Thu, 2 Jul 2020 20:04:20 +0800 |
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Hi,
A more detailed bug report can be found at [1].
I have a AMD Renoir system that can't enter graphical session because there are many IOMMU splat.
Alex suggested to disable "Pre-boot DMA Protection", I can confirm once it's disabled, AMDGPU starts working with IOMMU enabled. So raise the issue here because I have no knowledge on how to reset the IOMMU.
[1] https://gitlab.freedesktop.org/drm/amd/-/issues/1204
Kai-Heng
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