Well, unfortunately that was the last of the low-hanging fruit to test with. We're going to need to try a bunch of different kernel versions to see which version introduced this issue and then probably bisect our way through that version to find the exact commit that broke it (so that we can revert that commit or otherwise understand what we need to do to fix the issue). From this point on I'm going to be providing 2-3 kernel builds at a time, in each batch please test ALL of them and then for each one provide the kernel log and whether it worked or not. I'd recommend you also have linux-lts (and the matching nvidia package) installed so that you have a working kernel to boot into just in case.