Bug#994081: I understand the problem

[Matthew Vernon <matthew@debian.org>]

Hi,

I went looking to try and see where the check was being carried out, and 
it's in:

/usr/lib/libdvd-pkg/b-i_libdvdcss.sh

apt-get check >/dev/null 2>&1
if [ "$?" -ne 0 ]; then
    echo "${PKGI}: \`apt-get check\` failed, you may have broken 
packages. Aborting..."
    exit 0
fi

Which is why there's no useful information in the error message. So I 
edited that file on my system and ran apt autoremove so force a trigger 
run, and that gets:

/usr/src/libdvd-pkg/libdvdcss_1.4.3.orig.tar.bz2: OK
E: Could not get lock /var/lib/dpkg/lock-frontend. It is held by process 
29788 (apt)
N: Be aware that removing the lock file is not a solution and may break 
your system.
E: Unable to acquire the dpkg frontend lock 
(/var/lib/dpkg/lock-frontend), is another process using it?
libdvd-pkg: `apt-get check` failed, you may have broken packages. 
Aborting...

So I'm afraid the problem is that running this script from apt (as it is 
evidently intended to be run) can never work, because apt-get check 
tries to hold the dpkg lock, but it's help by apt.

So I think this is RC, do you agree?

Regards,

Matthew