Comment 46 for bug 1840122

@brian-murray prepared a test Jammy arm64 ISO with finalrd from the PPA above (serial: 20211208.1). I chose arm64 as it's the architecture most heavily affected by this issue (at least in our test environment).

I performed several ISO test runs on the image and the success rate went from <50% to a solid 100%. I think it's enough to say that the fix works. I'll prepare an upload for Jammy, then we'll have to SRU the fix.