Bug#773293: kde-plasma-desktop: Can't install kde-plasma-desktop non-interactively due to kdm configuration dialog

[Bob Doolittle <debianbug.bobd@dfgh.net>]

Source: kde-plasma-desktop
Severity: important

Dear Maintainer,

I am trying to install kde-plasma-desktop non-interactively (i.e. from a script). kde-plasma-desktop pulls in both lightdm and kdm packages, both of which want to be the default display manager. I am using debconf-set-selections to set the "shared/default-x-display-manager" question for both kdm and lightdm before running apt-get, to avoid interaction. Unfortunately the dialog is still presented to choose kdm or lightdm. If I use "DEBIAN_FRONTEND=non-interactive apt-get install" I avoid the interaction, but the configuration database values are overwritten to prefer kdm.


-- System Information:
Debian Release: jessie/sid
  APT prefers trusty-updates
  APT policy: (500, 'trusty-updates'), (500, 'trusty-security'), (500, 'trusty'), (100, 'trusty-backports')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.13.0-40-generic (SMP w/1 CPU core)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/dash