Comment 0 for bug 1864992

During a Focal install from the ISO image several errors like:

depmod: ERROR: ../libkmod/libkmod.c:515 lookup_builtin_file() could not open builtin file '/lib/modules/5.4.0-14-generic/modules.builtin.bin'

are logged in curtin's install logs. The installed system boots and works fine, but the error is clearly something we want to get rid of.

At first glance this seems related to:

https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1863261

but the version of initramfs-tools in both the installer and installed system (checked with `chroot /target dpkg -l initramfs-tools` during the installation) is 0.136ubuntu1, which should contain Rafael's fix for that bug. I wonder if the update-initramfs diversion has a role here.

I verified this happens at least on amd64 and arm64. I'm attaching the full install logs for a amd64 installation.