Bug#442892: dpkg-reconfigure xserver-xorg is useless without discover installed

[Mike Hommey <mh+reportbug@glandium.org>]

Package: xserver-xorg
Version: 1:7.3+2
Severity: important

Hi,

I recently upgraded my x.org server in sid, and, after upgrade, the X
server would not work. But this is another issue I will try to
understand at another time.

Anyways, the thing is, since my conf was not working, I wanted to try to
dpkg-reconfigure xserver-xorg, which I would assume to work, but didn't
in my case, because discover was not installed.

Here is the message I get after reconfiguring when discover is not
installed:

xserver-xorg postinst warning: overwriting possibly-customised configuration
   file; backup in /etc/X11/xorg.conf.20070917193443
dexconf: error: cannot generate configuration file; 
xserver-xorg/config/device/driver not set.  Aborting.  Reconfigure the X server 
with "dpkg-reconfigure xserver-xorg" to correct this problem.
xserver-xorg postinst warning: error while preparing new Xorg X server
   configuration file in /etc/X11/xorg.conf.dpkg-new; not attempting to
   update existing configuration

Note that /etc/X11/xorg.conf.dpkg-new doesn't even exist after this, and
that I never get asked what driver to use.

After installing discover, everything works fine.

Mike

-- System Information:
Debian Release: lenny/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.22-1-686 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages xserver-xorg depends on:
ii  debconf [debconf-2 1.5.14                Debian configuration management sy
ii  x11-common         1:7.3+2               X Window System (X.Org) infrastruc
ii  xbase-clients      1:7.3+2               miscellaneous X clients - metapack
ii  xkb-data           1.0~cvs.20070916-1    X Keyboard Extension (XKB) configu
ii  xserver-xorg-core  2:1.4-2               X.Org X server -- core server
ii  xserver-xorg-input 1:1.2.0~git20070819-3 X.Org X server -- evdev input driv
ii  xserver-xorg-input 1:1.2.2-3             X.Org X server -- keyboard input d
ii  xserver-xorg-input 1:1.2.2-5             X.Org X server -- mouse input driv
ii  xserver-xorg-video 1:6.6.193-3           X.Org X server -- ATI display driv
ii  xserver-xorg-video 1:1.3.0-4             X.Org X server -- VESA display dri

Versions of packages xserver-xorg recommends:
ii  discover               2.1.2-2           hardware identification system
ii  dmidecode              2.9-1             Dump Desktop Management Interface 
ii  laptop-detect          0.13.2            attempt to detect a laptop
ii  libgl1-mesa-dri        7.0.1-2           A free implementation of the OpenG
ii  xresprobe              0.4.23debian1-0.1 X Resolution Probe

-- debconf information excluded