package kdm 4:4.3.5-0ubuntu1~karmic1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[r_avital]

package kdm 4:4.3.5-0ubuntu1~karmic1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

Release 9.10

apt-cache policy returns:
  Installed: 4:4.3.5-0ubuntu1~karmic1
  Candidate: 4:4.3.5-0ubuntu1~karmic1
  Version table:
 *** 4:4.3.5-0ubuntu1~karmic1 0
        500 http://us.archive.ubuntu.com karmic-backports/main Packages
        100 /var/lib/dpkg/status
     4:4.3.2-0ubuntu7.1 0
        500 http://us.archive.ubuntu.com karmic-updates/main Packages
     4:4.3.2-0ubuntu7 0
        500 http://us.archive.ubuntu.com karmic/main Packages
W: Unable to locate package 4:4.3.5-0ubuntu1~karmic1

Expected: successful completion of weekly update.
Instead: Exited with above error message

ProblemType: Package
Architecture: i386
Date: Fri Feb 12 09:43:03 2010
DistroRelease: Ubuntu 9.10
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
NonfreeKernelModules: nvidia
Package: kdm 4:4.3.5-0ubuntu1~karmic1
ProcVersionSignature: Ubuntu 2.6.31-20.57-generic
SourcePackage: kdebase-workspace
Title: package kdm 4:4.3.5-0ubuntu1~karmic1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
Uname: Linux 2.6.31-20-generic i686

[Monkey (monkey-libre)]

I´ve assigned this bug to the kdm package. Thank You for making Ubuntu better.

[Rich (rincebrain)]

Problem is that it can't find whatever it thinks the default DM should be - in my case, gdm-2.20, and so errors out.

My solution was to symlink the filename it was searching for (gdm-2.20) to the actual binary name (gdm) in /usr/sbin, and it passes configure correctly.