This bug breaks dapper -> edgy upgrades. I can reproduce it too on my headless machines.
Setting up gnome-app-install (0.2.12) ... (update-app-install:12816): Gtk-WARNING **: Locale not supported by C library. Using the fallback 'C' locale. Traceback (most recent call last): File "/usr/sbin/update-app-install", line 16, in ? from AppInstall.Menu import * File "/usr/lib/python2.4/site-packages/AppInstall/Menu.py", line 5, in ? import gtk File "/usr/lib/python2.4/site-packages/gtk-2.0/gtk/__init__.py", line 45, in ? from _gtk import * RuntimeError: could not open display there is no X or any kind of display running. Fabio ** Changed in: gnome-app-install (Ubuntu) Importance: High => Critical -- g-a-i postinst fails if X is not running https://launchpad.net/bugs/59403 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs