[Bug 309047] New: KDE should warn the user if connection to localhost fails

[Stephan Beyer]

https://bugs.kde.org/show_bug.cgi?id=309047

            Bug ID: 309047
          Severity: minor
               URL: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=69140
                    6
           Version: unspecified
          Priority: NOR
          Assignee: unassigned-bugs at kde.org
           Summary: KDE should warn the user if connection to localhost
                    fails
    Classification: Unclassified
                OS: Linux
          Reporter: stephan.beyer at uni-jena.de
          Hardware: Debian testing
            Status: UNCONFIRMED
         Component: general
           Product: unknown

If the lo loopback interface (needed to connect to 127.0.0.1) is down, KDE is
unusable: KDE startup takes 4 minutes and a lot of KDE programs takes minutes
to start.
The reason is that those KDE programs want to connect to 127.0.0.1 and if
localhost is not available, the connect()s just timeout and everything goes on.

I think that - at least - at the KDE startup one process (kdeinit?) should say
"Hey, I am unable to connect to localhost. This should not happen! Please check
your system, something is wrong. KDE does not work well under this
circumstances."
A warning like this would have saved me a lot of time.

Best
  Stephan

Reproducible: Always

Steps to Reproduce:
1. ifdown lo   (or, if ifdown is not available, something like ifconfig lo down
should do it)
2. look for an activity for the next 10 minutes
3. start KDE
Actual Results:  
KDE startup took 4 minutes and running several KDE programs takes a lot of
time. A list of such KDE programs can be found in the Debian bug report (see
link).

Expected Results:  
Either KDE should just work[tm] or it should provide a warning that the system
is f**ked up because localhost connection fails.

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