Sunday 26 June 2022

Re: Jammy regressions

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@canonical.com
> <mailto:daniel.van.vugt@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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