[Bug 984276] Re: installing casper on a non live system causes update-initramfs to fail

[Brian Murray]

I think why this is only happening for some people is that update-
initramfs doesn't end up being a symlink for them.  casper.postinst
contains the following:

#! /bin/sh

# If running from writable media, make sure that update-initramfs is
# properly a symlink.
if [ "$1" = configure ] && dpkg --compare-versions "$2" lt-nl 1.253 && \
   [ -w /cdrom ] && [ -e /usr/sbin/update-initramfs.distrib ] && \
   [ ! -L /usr/sbin/update-initramfs ] && \
   fgrep -qs update-initramfs.distrib /usr/sbin/update-initramfs; then
    ln -nsf /usr/share/casper/casper-update-initramfs \
            /usr/sbin/update-initramfs
fi

update-initramfs -u

#DEBHELPER#

If you just install casper and don't pass all the tests update-initramfs
won't be symlinked to casper-update-initramfs and then you will be able
to install kernel updates.  However, if the symlink is created you'll
likely have problems using update-initramfs.

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https://bugs.launchpad.net/bugs/984276

Title:
  installing casper on a non live system causes update-initramfs to fail

Status in “casper” package in Ubuntu:
  Confirmed
Status in “casper” source package in Precise:
  Confirmed

Bug description:
  In the event that someone decides to install casper on their Ubuntu
  system, which a lot of people apparently do decide to do, then they
  will be unable to use update-initramfs which will cause package
  installation failures for initramfs-tools.

  Workaround:
  Uninstall the casper package

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