*** This bug is a duplicate of bug 2158934 ***
https://bugs.launchpad.net/bugs/2158934
Please try 6.8.0-136-generic in -proposed, as it has "Revert "PCI:
Enable ACS after configuring IOMMU for OF platforms"" which should fix
this issue.
See bug 2158934.
** This bug has been marked a duplicate of bug 2158934
Regression related to IOMMU grouping
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https://bugs.launchpad.net/bugs/2160616
Title:
[regression] 6.8.0-134: IOVA allocator hands out addresses inside BIOS
RMRR regions, causing DMA mapping failures and storage controller loss
(HP ProLiant Gen8 / P420i)
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