<div dir="ltr">Doesn't intel_iommu=off imply a security risk because a thunderbolt device can access all of the RAM? intel_iommu=<span style="background-color:rgb(252,252,252);color:rgb(0,0,0);font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",Courier,monospace;font-size:12px">igfx_off should be enough to resolve issues with GPUs.</span></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Fri, Jun 24, 2022 at 11:25 AM Daniel van Vugt <<a href="mailto:daniel.van.vugt@canonical.com">daniel.van.vugt@canonical.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Looking at jammy's remaining release regressions:<br>
<br>
<a href="https://bugs.launchpad.net/ubuntu/?field.searchtext=&search=Search&field.tag=jammy%20regression-release&field.tags_combinator=ALL&orderby=-heat&start=0" rel="noreferrer" target="_blank">https://bugs.launchpad.net/ubuntu/?field.searchtext=&search=Search&field.tag=jammy%20regression-release&field.tags_combinator=ALL&orderby=-heat&start=0</a><br>
<br>
It appears 21% of them are solvable (by most reports) using the kernel parameter <br>
"intel_iommu=off". Is this something the kernel team would consider?<br>
<br>
<a href="https://launchpad.net/bugs/1958191" rel="noreferrer" target="_blank">https://launchpad.net/bugs/1958191</a><br>
<a href="https://launchpad.net/bugs/1965882" rel="noreferrer" target="_blank">https://launchpad.net/bugs/1965882</a><br>
<a href="https://launchpad.net/bugs/1959041" rel="noreferrer" target="_blank">https://launchpad.net/bugs/1959041</a><br>
<a href="https://launchpad.net/bugs/1971146" rel="noreferrer" target="_blank">https://launchpad.net/bugs/1971146</a><br>
<br>
- Daniel<br>
<br>
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</blockquote></div>