tilde key doesn't work as deadkey

[wettstae at gmail.com]

> after I upgraded Ubuntu from 13.10 to 14.04 I can't type letters with
> a makron on top like for instance 'ā' with the 'AltGr' + 'Shift' + '+'
> - shortcut which worked before.

There was a change in xkeyboard-config more than a year ago that made
the tilde in the default German layout non-dead, as DIN demands.  Also,
the dead macron became a normal macron.  If you want the old behaviour,
use the "legacy" (called "veraltet" in German) variant of the layout.

Andreas