Bug#648781: debian-installer: unattended installation using preseed is interrupted by installer main menu popping up

[Johannes Schauer <j.schauer@email.de>]

Package: debian-installer
Version: 20110106+squeeze3+b1
Severity: normal
Tags: sid

When using this preseed file:

http://mister-muffin.de/debian/preseed.txt

after the "Install the base system" step this appears and interrupts the
installation, prompting for user input:

http://mister-muffin.de/p/Ai7F.png

Also notice the wrong menu entries.

The same error happens with more minimal preseed files.

It turns out that the problem only occurs when having:

d-i mirror/suite string sid
d-i mirror/udeb/suite string sid

When choosing wheezy instead, everything is fine.

I gathered debug output with the DEBCONF_DEBUG=developer option and with
this preseed file:

http://mister-muffin.de/debian/preseed2.txt

(which will produce the following interrupting main menu:
http://mister-muffin.de/p/qlbd.png)

Here is the syslog from the point where the menu appeared:

http://mister-muffin.de/p/a1nJ.txt

And here a tarball of the directory, which is created after hitting
"save debug logs" in the main menu:

http://mister-muffin.de/p/sS_r