Comment 2 for bug 1062525

As an added note, I responded to the thread in question with

I'm completely unable to reproduce the issue using a fresh 12.04.1
install (upgraded using default repos), enabling 0.26 repo, then doing
an upgrade there. So it would seem to me that it is not a packaging
issue. The code you are questioning is as follows

CONFIG=/etc/mythtv/config.xml
if [ -e $CONFIG ]; then
    db_set mythtv/mysql_mythtv_dbname "`xpath -q -e
'string(//DBName)' $CONFIG 2>/dev/null`"
    db_set mythtv/mysql_mythtv_user "`xpath -q -e
'string(//DBUserName)' $CONFIG 2>/dev/null`"
    db_set mythtv/mysql_mythtv_password "`xpath -q -e
'string(//DBPassword)' $CONFIG 2>/dev/null`"
    db_set mythtv/mysql_host "`xpath -q -e 'string(//DBHostName)'
$CONFIG 2>/dev/null`"
fi

Which says to read the /etc/mythtv/config.xml file and set the value
to what is returned (and throw away error messages). So if you run the
following commands and don't get returns of your DBName, DBUserName,
DBPassword, and DBHostName, then there is something wrong with your
config.xml file.

xpath -q -e 'string(//DBName)' /etc/mythtv/config.xml 2>/dev/null
xpath -q -e 'string(//DBUserName)' /etc/mythtv/config.xml 2>/dev/null
xpath -q -e 'string(//DBPassword)' /etc/mythtv/config.xml 2>/dev/null
xpath -q -e 'string(//DBHostName)' /etc/mythtv/config.xml 2>/dev/null

For instance, on this VM I just setup, I get

thomas@tmashos-testboxen5:~$ xpath -q -e 'string(//DBName)'
/etc/mythtv/config.xml 2>/dev/null
mythconverg
thomas@tmashos-testboxen5:~$ xpath -q -e 'string(//DBUserName)'
/etc/mythtv/config.xml 2>/dev/null
mythtv
thomas@tmashos-testboxen5:~$ xpath -q -e 'string(//DBPassword)'
/etc/mythtv/config.xml 2>/dev/null
Nal0pMRh
thomas@tmashos-testboxen5:~$ xpath -q -e 'string(//DBHostName)'
/etc/mythtv/config.xml 2>/dev/null
localhost
thomas@tmashos-testboxen5:~$