desktop b0rken: was Re: X not working on precise

Oliver Grawert ogra at
Thu Sep 13 15:36:02 UTC 2012

On Thu, 13 Sep 2012 16:12:46 +0100
Dave Howorth <dhoworth at> wrote:

> So it looks to me (although I don't know what should be in a .dmrc
> file) that lxde did create such a file properly, but it hasn't been
> upgraded properly and may still be wrong?

exactly ...
the first one would have been right for an lxde session. 
i assume when you logged into lightdm and ended up in the unity session
lightdm updated the dmrc file properly, when you then switched back to
ldxm it didnt update the file to read "session = LXDE" as it should.

> > 2. lightdm not respecting the debconf default (lxdm) for the display
> > manager (though that wouldnt have been harmful if ~/,dmrc
> > existed) ...
> Sorry, I don't know what a debconf default is.

you do set the default display manager when running i.e.: 

sudo dpkg-reconfigure lightdm 
(or respectively sudo dpkg-reconfigure lxdm)

this sets a value in the debconf database which should be
respected by all packages (i.e. if it points to lxdm and lxdm is
installed, no other package should change it to something else in

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