Public bug reported: 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: udev (Ubuntu) Importance: Undecided Status: New ** Affects: udev (Debian) Importance: Unknown Status: Unknown ** Tags: trusty ** Bug watch added: Debian Bug tracker #756312 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756312 ** Also affects: udev (Debian) via http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=756312 Importance: Unknown Status: Unknown -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1618471 Title: udev: init script unconditionally writes to /sys/kernel/uevent_helper To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/udev/+bug/1618471/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs