You have been subscribed to a public bug: The udev initramfs-tools script from trusty lts:
/usr/share/initramfs-tools/scripts/init-top/udev does not check if uevent_helper does exist and fails to boot if it is missing - which it is in recent kernels (e.g. 4.7.2 from the mainline ppa or modern self build kernels where it is disabled per default afaik). See e.g.: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756312 Its fixed in xenials version (latest LTS) but fails in current supported LTS trusty to boot. Please backport those simple fix: if [ -w /sys/kernel/uevent_helper ]; then echo > /sys/kernel/uevent_helper fi and maybe add udevadm settle || true at the end to support kernels without uevent_helper enabled. ** Affects: systemd (Ubuntu) Importance: Undecided Status: Fix Released ** Affects: systemd (Debian) Importance: Unknown Status: Fix Released ** Tags: trusty -- udev: init script unconditionally writes to /sys/kernel/uevent_helper https://bugs.launchpad.net/bugs/1618471 You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to systemd in Ubuntu. -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp

