disable Intel DMA remapping by default
Bug #1971699 reported by
Andrea Righi
This bug affects 3 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Jammy |
Fix Released
|
Medium
|
Unassigned |
Bug Description
[Impact]
It seems that enabling Intel IOMMU can cause some weird gfx problems, see for example:
https:/
https:/
[Test case]
We don't have any specific test case, only other bug reports that tracked down the origin of the issue as being introduced when CONFIG_
[Fix]
Revert "UBUNTU: [Config] enable Intel DMA remapping options by default"
[Regression potential]
DMA remapping device not present at boot by default, users that require this feature will need to specifically add intel_iommu=on to the kernel boot parameters to enable it.
affects: | linux-firmware (Ubuntu) → linux (Ubuntu) |
summary: |
- disable Intel DMA remapping options by default + disable Intel DMA remapping by default |
Changed in linux (Ubuntu Jammy): | |
importance: | Undecided → Medium |
status: | New → In Progress |
Changed in linux (Ubuntu): | |
status: | Incomplete → Invalid |
tags: | added: sts |
Changed in linux (Ubuntu Jammy): | |
status: | In Progress → Fix Committed |
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This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1971699
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.