The code that causes behavior reported in Comment #4 (at least in Trisquel):
cat /var/lib/dpkg/info/lightdm.config
# set default display manager
DEFAULT_DISPLAY_MANAGER_FILE=/etc/X11/default-display-manager
[...]
# debconf is not a registry; use the current contents of the default display
#
Hi,
Pardon me if I'm misunderstanding, but it very much seems to me that the
gdm/lightdm configuration scripts are unconditionally setting the
default value of the debconf choice to gdm, irrespective of the previous
value of the setting.
Is that normal behaviour ?
In the transcript below I
ok thanks
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https://bugs.launchpad.net/bugs/1020770
Title:
gdm install prompts about dm when debconf value set
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** Tags added: problem same
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https://bugs.launchpad.net/bugs/1020770
Title:
gdm install prompts about dm when debconf value set
To manage notifications about this bug
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: gdm (Ubuntu)
Status: New = Confirmed
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This worked for me:
echo debconf debconf/priority select critical
lightdm shared/default-x-display-manager select gdm
gdm shared/default-x-display-manager select lightdm | debconf-set-selections
You will likely want to set the debconf priority back to high when
you're done.
I'm closing this bug
