Bug#614972: gdm3: can't login ("can't open display :0" in .xsession-errors)

[Josselin Mouette]

Le jeudi 24 février 2011 à 23:32 +0100, Vincent Lefevre a écrit : 
> > This is not the same software. It is not compatible. Should we also
> > document the differences with xdm, slim and kdm?
> 
> You miss the point that gdm3 is described as the successor of gdm:

Successor, yes. Compatible, no. Otherwise it would have been named the
same.

> > >   * there should be a dialog box at first install time mentioning
> > >     these differences.
> > 
> > WTF?
> 
> Packages often do this when an upgrade yields incompatible changes
> that require attention. For the reasons why I consider this as an
> upgrade, see above. But if the end user is not the admin of the
> machine, such a dialog box would be useless, so perhaps not a good
> idea, finally.

It is forbidden to use debconf to that effect. Usually this is done in
NEWS.Debian files, but it is irrelevant in this case since this is not
the same package.

> > yelp ghelp:gdm
> 
> That's not a standard way to read a manual file... perhaps under
> GNOME, but gdm is just a display manager shared by several users,
> and not all users use GNOME (FYI, I don't).

So what?

> Moreover this manual doesn't seem to mention the XAUTHORITY
> environment variable (that's the most important point, since
> this is what the user really sees about the location of the
> X authority file, and this is where something is likely to
> break, everything else being mostly internals).
> 
> Also the manual should use the standard terminology, that is
> at least one of:
>   .Xauthority file
>   authorization file
>   X authority file
> like in the main man pages about the subject (xauth(1), Xsecurity(7),
> X(7), Xserver(1)).

Feel free to propose patches to the user manual at bugzilla.gnome.org.

Cheers,
-- 
 .''`.      Josselin Mouette
: :' :
`. `'  “If you behave this way because you are blackmailed by someone,
  `-    […] I will see what I can do for you.”  -- Jörg Schilling

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