Bug#668572: installation-guide: [patch] mention DEBCONF_DEBUG

[Vincent McIntyre <vincent.mcintyre@csiro.au>]

Package: installation-guide
Severity: normal
Tags: patch

Hi

please consider this patch explaining the use of DEBCONF_DEBUG
when debugging a preseeded installation. I found it a helpful tool.

Cheers
Vince

Index: manual/en/appendix/preseed.xml
===================================================================
--- manual/en/appendix/preseed.xml      (revision 67384)
+++ manual/en/appendix/preseed.xml      (working copy)
@@ -1578,6 +1578,14 @@
 questions that are actually displayed during an installation and not for
 <quote>internal</quote> parameters.
 
+</para><para>
+
+For more debugging information, use the boot parameter
+<classname>DEBCONF_DEBUG=5</classname>.
+This will cause <classname>debconf</classname> to print much more detail
+about the current settings of each variable and about its progress through
+each package's installation scripts.
+
 </para>
   </sect2>
 

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