DKMS broken on Ubuntu
A recent update (2.3-3ubuntu9.4) in Ubuntu 18.04 breaks the normal operation of the DKMS (Dynamic Kernel Module Support) system used to build third-party kernel modules after updating the Linux kernel. A sign of a problem is the message “/usr/sbin/dkms: line### find_module: command not found” when manually installing modules, or suspiciously different sizes of initrd.*.dkms and the newly created initrd (this can be checked by unattended-upgrade users) . […]