I think I may be 'missing' /bin/udevadm ? Anyway, below follows output of the commands you mentioned. Let me know if you need anything else.
sc@desktop-ssd:~$ sudo /sbin/udevadm hwdb --update [sudo] password for sc: sudo: /sbin/udevadm: command not found sc@desktop-ssd:~$ cd /sbin/ sc@desktop-ssd:/sbin$ ls -l |grep udev lrwxrwxrwx 1 root root 12 Sep 17 17:02 udevadm -> /bin/udevadm lrwxrwxrwx 1 root root 26 Sep 17 17:02 udevd -> /lib/systemd/systemd-udevd -rwxr-xr-x 1 root root 71160 Jul 18 11:48 upstart-udev-bridge sc@desktop-ssd:/sbin$ cd /bin/ sc@desktop-ssd:/bin$ ls -l |grep udev sc@desktop-ssd:/bin$ sudo sed -i '2 s/^/set -x/' /usr/share/initramfs-tools/hooks/udev sc@desktop-ssd:/bin$ (no output) sudo update-initramfs -uv 2>&1|tee /tmp/update-initramfs.out (file attatched) sc@desktop-ssd:~$ sudo sed -i '2 s/^.*$//' /usr/share/initramfs-tools/hooks/udev sc@desktop-ssd:~$ (no output) Other crash report uploaded here: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1388527 ** Attachment added: "update-initramfs.out" https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1388139/+attachment/4251168/+files/update-initramfs.out -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1388139 Title: package udev 204-5ubuntu20.7 failed to install/upgrade: postinst segfault To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1388139/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs