Jammy regressions

Daniel van Vugt daniel.van.vugt at canonical.com
Mon Jun 27 02:06:55 UTC 2022


Sounds like intel_iommu=igfx_off should be suggested in each bug so please get 
involved by replying to the bugs:

https://bugs.launchpad.net/ubuntu/+bugs?field.tag=iommu


On 24/6/22 9:14 pm, Heinrich Schuchardt wrote:
> Doesn't intel_iommu=off imply a security risk because a thunderbolt device can 
> access all of the RAM? intel_iommu=igfx_off should be enough to resolve issues 
> with GPUs.
> 
> On Fri, Jun 24, 2022 at 11:25 AM Daniel van Vugt <daniel.van.vugt at canonical.com 
> <mailto:daniel.van.vugt at canonical.com>> wrote:
> 
>     Looking at jammy's remaining release regressions:
> 
>     https://bugs.launchpad.net/ubuntu/?field.searchtext=&search=Search&field.tag=jammy%20regression-release&field.tags_combinator=ALL&orderby=-heat&start=0
>     <https://bugs.launchpad.net/ubuntu/?field.searchtext=&search=Search&field.tag=jammy%20regression-release&field.tags_combinator=ALL&orderby=-heat&start=0>
> 
>     It appears 21% of them are solvable (by most reports) using the kernel
>     parameter
>     "intel_iommu=off". Is this something the kernel team would consider?
> 
>     https://launchpad.net/bugs/1958191 <https://launchpad.net/bugs/1958191>
>     https://launchpad.net/bugs/1965882 <https://launchpad.net/bugs/1965882>
>     https://launchpad.net/bugs/1959041 <https://launchpad.net/bugs/1959041>
>     https://launchpad.net/bugs/1971146 <https://launchpad.net/bugs/1971146>
> 
>     - Daniel
> 
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