Fix IOMMU error on AMD Radeon Pro W5700
Bug #1890306 reported by
Kai-Heng Feng
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Critical
|
Unassigned | ||
linux-oem-5.6 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Critical
|
Unassigned |
Bug Description
[Impact]
AMD Radeon Pro W5700 doesn't work at all, driver failed to probe the
device due to IOMMU error.
[Fix]
Disable PCI ATS for the device.
[Test]
After applying the patch, there's no more IOMMU error, and the driver
can correctly probe the device. The grahpics also works great.
[Regression Potential]
Low. amdgpu is known to work well with ATS disabled. In addition to
that, AMD confirmed it's the correct fix for this card, so the chance to
break anything is rather low.
CVE References
Changed in linux-oem-5.6 (Ubuntu Focal): | |
status: | New → Confirmed |
Changed in linux (Ubuntu Focal): | |
status: | New → Confirmed |
importance: | Undecided → Critical |
Changed in linux-oem-5.6 (Ubuntu Focal): | |
importance: | Undecided → Critical |
Changed in linux (Ubuntu): | |
status: | New → Invalid |
Changed in linux-oem-5.6 (Ubuntu): | |
status: | New → Invalid |
tags: | added: oem-priority originate-from-1887609 sutton |
Changed in linux (Ubuntu Focal): | |
status: | Confirmed → Fix Committed |
tags: |
added: verification-done-focal removed: verification-needed-focal |
Changed in linux-oem-5.6 (Ubuntu Focal): | |
status: | Confirmed → Fix Committed |
Changed in hwe-next: | |
status: | New → Fix Released |
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that's weird, I have a W5700 that AMD sent me, and it's working just fine with 5.4 in focal..