Bug#496548: xmodmap in xdm Xsetup, empty modifier map, broken Shift

[Ian Jackson <ian@davenant.greenend.org.uk>]

Ian Jackson writes ("Re: Bug#496548: xmodmap in xdm Xsetup, empty modifier map, broken 	Shift"):
> Julien Cristau writes ("Re: Bug#496548: xmodmap in xdm Xsetup, empty modifier map, broken 	Shift"):
> > 14:08 < daniels> jcristau: getting an empty modmap is a symptom of running 
> >                  without xkb
> 
> Note that the modifier map is only empty early on during
> startup/login.  It is apparently populated later, so I 
> think Peter Hutterer's references may be more to the point.

I worked around the problem which prevents switching from
xkb-data-legacy to xkb-data, and this made the bug disappear.

Why, with xkb-data, the buggy modifier map should be transient still
isn't clear to me.  And even less clear is why if this is the case a
partial map written by xmodmap is not overwritten.

But it does mean that I now have a working setup, thanks.

It might be worth seeing if we can fix #496700 and mark xkb-data as
Replacing xkb-data-legacy, to try to encourage its autoinstallation on
upgrade.

Ian.