Encountered on a test env:
root@fubar:~# apt-get purge lightdm mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package mysql-server is not installed, so not removed
The following packages were automatically installed and are no longer required:
linux-headers-3.2.0-25 mysql-server-core-5.5 mysql-client-core-5.5
unity-greeter linux-headers-3.2.0-25-generic liblightdm-gobject-1-0
mysql-server-5.5 mysql-client-5.5
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED
lightdm*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 200648 files and directories currently installed.)
Removing lightdm ...
Purging configuration files for lightdm ...
Removing user `lightdm' ...
Warning: group `lightdm' has no more members.
userdel: user lightdm is currently logged in
/usr/sbin/deluser: `/usr/sbin/userdel lightdm' returned error code 8. Exiting.
dpkg: error processing lightdm (--purge):
subprocess installed post-removal script returned error exit status 1
Errors were encountered while processing:
lightdm
E: Sub-process /usr/bin/dpkg returned an error code (1)
root@fubar:~# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"
By this time the service scripts were partially removed there was no way
to terminate the lightdm, killed it:
root@fubar:~# ps -ef|grep -v grep | grep lightdm | awk '{print $2}' |
xargs kill -9
and then repeated the step:
root@fubar:~# apt-get purge lightdm mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package mysql-server is not installed, so not removed
The following packages were automatically installed and are no longer required:
linux-headers-3.2.0-25 mysql-server-core-5.5 mysql-client-core-5.5
unity-greeter linux-headers-3.2.0-25-generic liblightdm-gobject-1-0
mysql-server-5.5 mysql-client-5.5
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED
lightdm*
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 0 B of additional disk space will be used.
Do you want to continue [Y/n]? y
(Reading database ... 200648 files and directories currently installed.)
Removing lightdm ...
Purging configuration files for lightdm ...
Removing user `lightdm' ...
Warning: group `lightdm' has no more members.
Done.
dpkg: warning: while removing lightdm, directory '/etc/lightdm' not empty so
not removed.
Processing triggers for ureadahead ...
And finally it's gone.
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to lightdm in Ubuntu.
https://bugs.launchpad.net/bugs/992376
Title:
package lightdm (not installed) failed to install/upgrade: subprocess
installed post-removal script returned error exit status 1
Status in “lightdm” package in Ubuntu:
Invalid
Bug description:
lightdm failed to install or uninstall properly. While it was
installed I could not login to my system. stopping the service and
then removing the package and installing gdm fixed the issue. Not as
pretty but at least I can login.
Description: Ubuntu 12.04 LTS
Release: 12.04
ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: lightdm (not installed)
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu7
AptOrdering:
lightdm-gtk-greeter: Purge
ubuntu-desktop: Purge
lightdm: Purge
Architecture: amd64
Date: Mon Apr 30 21:15:34 2012
ErrorMessage: subprocess installed post-removal script returned error exit
status 1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: lightdm
Title: package lightdm (not installed) failed to install/upgrade: subprocess
installed post-removal script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-04-27 (3 days ago)
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/992376/+subscriptions
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