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[Dominic Raferd <613273@xxxxxxxxxxxxxxxxxx>]

I have been having this problem (intermittently) with Ubuntu Server
15.04 and now with 15.10 on my Intel NUC5CPYH for the last 3 months
(since I bought it in fact). It only seems to happen when rebooting
(never from a cold boot), and it doesn't always happen. I've attached an
image of the console output. As my machine is normally headless it is
particularly frustrating!

I use LVM but not for the root/system partition, only for /home. My
system/root is at /dev/sda1 and formatted with ext4.

I am using latest kernels downloaded from Ubuntu's
http://kernel.ubuntu.com/~kernel-ppa/mainline/ (currently 4.2.5) - but
as discussed here it doesn't seem to be a kernel issue.

** Attachment added: "Image of the console output"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/613273/+attachment/4509728/+files/IMG_20151017_072019871.jpg

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https://bugs.launchpad.net/bugs/613273

Title:
  run-init: nuking initramfs contents: directory not empty

Status in initramfs-tools package in Ubuntu:
  Invalid
Status in linux package in Ubuntu:
  Invalid
Status in udev package in Ubuntu:
  Fix Released
Status in initramfs-tools source package in Lucid:
  Invalid
Status in linux source package in Lucid:
  Invalid
Status in udev source package in Lucid:
  Fix Released
Status in initramfs-tools source package in Maverick:
  Invalid
Status in linux source package in Maverick:
  Invalid
Status in udev source package in Maverick:
  Invalid
Status in initramfs-tools source package in Natty:
  Invalid
Status in linux source package in Natty:
  Invalid
Status in udev source package in Natty:
  Invalid

Bug description:
  In testing alpha-3 build 20100813.2, I found the following kernel oops:
  [    0.473264] Kernel panic - not syncing: Attempted to kill init!^M
  [    0.473277] Pid: 1, comm: run-init Not tainted 2.6.35-14-virtual #19-Ubuntu^M
  [    0.473284] Call Trace:^M
  [    0.473294]  [<ffffffff815a0109>] panic+0x90/0x111^M
  [    0.473303]  [<ffffffff81006b1b>] ? __raw_callee_save_xen_irq_enable+0x11/0x26^M
  [    0.473312]  [<ffffffff8106276d>] forget_original_parent+0x33d/0x350^M
  [    0.473318]  [<ffffffff81061b94>] ? put_files_struct+0xc4/0xf0^M
  [    0.473325]  [<ffffffff8106279b>] exit_notify+0x1b/0x190^M
  [    0.473330]  [<ffffffff810640a5>] do_exit+0x1c5/0x3f0^M
  [    0.473336]  [<ffffffff81006afd>] ? __raw_callee_save_xen_irq_disable+0x11/0x1e^M
  [    0.473343]  [<ffffffff810643d7>] sys_exit+0x17/0x20^M
  [    0.473349]  [<ffffffff8100a0f2>] system_call_fastpath+0x16/0x1b^M

  This happened only once in my testing so far today (dozens of boots).
  I'm attaching the console log of failed instance.  The instance that reported this bug is same ami/region different instance.

  ProblemType: Bug
  DistroRelease: Ubuntu 10.10
  Package: linux-image-2.6.35-14-virtual 2.6.35-14.19
  Regression: Yes
  Reproducible: No
  ProcVersionSignature: User Name 2.6.35-14.19-virtual 2.6.35
  Uname: Linux 2.6.35-14-virtual x86_64
  AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access /dev/snd/: No such file or directory
  AplayDevices: Error: [Errno 2] No such file or directory
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  CurrentDmesg: [   12.900041] eth0: no IPv6 routers present
  Date: Wed Aug  4 01:19:11 2010
  Ec2AMI: ami-09c3bc5b
  Ec2AMIManifest: ubuntu-images-testing-ap-southeast-1/ubuntu-maverick-daily-amd64-server-20100803.2.manifest.xml
  Ec2AvailabilityZone: ap-southeast-1b
  Ec2InstanceType: m1.large
  Ec2Kernel: aki-11d5aa43
  Ec2Ramdisk: unavailable
  Frequency: Once a week.
  Lspci:
   
  Lsusb: Error: command ['lsusb'] failed with exit code 1:
  ProcCmdLine: root=LABEL=uec-rootfs ro
  ProcEnviron:
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcModules: acpiphp 18752 0 - Live 0xffffffffa0000000
  SourcePackage: linux

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