Hopefully another data point: I accidentally started an install of the
"ppm" package using "sudo apt-get install ppm" (I had the wrong package
name), and it appeared to try to install kexec-tools. It hung during
setup of kexec-tools (similar to
http://ubuntuforums.org/archive/index.php/t-1214718.html), so I
interrupted the process. After this, I could not get pending set-up to
finish because /var/cache/debconf/config.dat was locked, like so:
~% pstree -alps 8300
init,1
└─aptd,3060 /usr/sbin/aptd
└─dpkg,3098 --status-fd 14 --configure -a --force-confdef --force-confold
└─frontend,8300 -w /usr/share/debconf/frontend
/var/lib/dpkg/info/kexec-tools.postinst configure 1:2.0.2-1ubuntu4
└─kexec-tools.pos,8303 /var/lib/dpkg/info/kexec-tools.postinst
configure 1:2.0.2-1ubuntu4
└─update-grub,8313 /usr/sbin/update-grub
I was able to kill -kill 8313 (update-grub), then clean up as suggested
in this bug.
~% lsb_release -rd
Description: Ubuntu 12.04.1 LTS
Release: 12.04
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https://bugs.launchpad.net/bugs/349469
Title:
debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by
another process: Resource temporarily unavailable
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