Comment 8 for bug 1789918

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Brad Figg (brad-figg) wrote : Re: /boot/vmlinux-4.17 has invalid signature

I removed the pointer to the ckt/unstable ppa and purged all of the 4.18 kernels. I then installed the latest 4.17 kernel from -updates. That kernel, 4.17.0-9.10 now boots just fine with secure boot enabled. It looks like I did have more kernels installed from the ckt ppas than I thought I had.