Comment 1 for bug 2048919

Thanks Steffen for raising this and bringing this to our attention.
That should obviously not have happen, kernel config changes should be propagated to all newer Ubuntu kernel version, until explicitly dropped or modified for any other reason.
It looks like we hit a kind of a race condition here. While setting this option in jammy, the development of mantic just started and it was missed to enable it in the 'unstable' tree at that time.
We are looking into it soon-ish.
I believe that having a kernel in PPA to unblock you is not very helpful, since I think you need that kernel signed with the usual (prod.) signature/key (and not with a test/dev key coming from the PPA).

Since lunar will reach it's eol in less than 2 weeks, we'll ensure that the option is set in mantic onwards.