[Pkg-xfce-devel] Bug#762731: Bug#762731: lightdm: issues strange error message when requested to start but is non-default dm

[Yves-Alexis Perez]

On mer., 2014-09-24 at 21:44 +0200, Yann Dirson wrote:
> On Wed, Sep 24, 2014 at 09:24:59PM +0200, Yves-Alexis Perez wrote:
> > On mer., 2014-09-24 at 21:17 +0200, Yann Dirson wrote:
> > > kdm is the default dm here, and I just switched from systemd.  When
> > > hunting various dm issues, I found that asking lightdm to start
> > > results in the following unexpected error (it does start as expected
> > > when set to be the default, however).  It should surely check the
> > > default dm settings, like eg. xdm does, and does not even attempt to
> > > start.
> > 
> > 
> > Well, that's exactly what it's doing…
> 
> I'm not sure if you're saying that it does check the dm settings.  If
> it's the case, then it looks like it causes the service start to error
> out, causing systemd to retry to launch it, whereas it is a perfectly
> legal situation for a dm to be disabled.  In that case, it is a change
> from what we've been used to, and I'm not sure to see the advantages
> of doing so.

Well, the same thing happens with sysvrc, the init.d script checks for
the default display manager and errors out if it's not the selected one.
> 
> I tried to lookup any policy information about display managers, but
> could not find any.  That makes me even more curious about how the
> collaboration among maintainers of dm packages is organized.

See #733220

-- 
Yves-Alexis
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