IOMMU Broken on 3.8 kernels?
Bug #1208297 reported by
alphac
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Expired
|
Medium
|
Unassigned |
Bug Description
I've got an Asrock A75Pro4-M, after enabling IOMMU from BIOS running with kernel 3.2.0-29-generic dmesg reported iommu correctly working:
[ 0.518415] AMD-Vi: Enabling IOMMU at 0000:00:00.2 cap 0x40 extended features: PreF PPR GT IA
[ 0.518479] AMD-Vi: Initialized for Passthrough Mode
Now with kernel 3.8.0-27 :
"AMD IOMMUv2 functionality not available on this system"
No more lines referring to IOMMU v1, is that a common behaviour?
Thanks
P.S. "ubuntu-bug linux" states that my current image file does not comes from an offical package (not true)
To post a comment you must log in.
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1208297
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.