Ubuntu 12.04 Problems with update manager in WLAN without connection

Thu Jul 12 12:15:55 UTC 2012

On Thursday 12 July 2012 08:15:13 Bernhard Garmann did opine:

> <html><head></head><body><div style="font-family: Verdana;font-size:
> 12.0px;"><div>Greetings,<br/></div><div><br/></div><div>I use 12.04 for
> some time now frequently from a location with a public WLAN that
> requires a login process before allowing full access. After connection
> establishment the WLAN allows DNS (and maybe some other protocols. Full
> INTERNET access only after the
> login.<br/></div><div><br/></div><div>The update manager regularly gets
> in trouble - leading to a corruption of the package listings and the
> recommendation to use apt-get command. Usual error
> messages:<br/></div><div><br/></div><div>....<br/></div><div>W: A error
> occurred during the signature verification. The repository is not
> updated and the previous index files will be used. GPG error:
> http://de.archive.ubuntu.com precise-backports Release: The following
> signatures were invalid: BADSIG 40976EAF437D05B5 Ubuntu Archive
> Automatic Signing Key <ftpmaster at ubuntu.com><br/><br/>W: Failed
> to fetch
> http://extras.ubuntu.com/ubuntu/dists/precise/Release<br/>....<br/></di
> v><div><br/></div><div>Usual remedy (found through google in some ubuntu
> wiki):<br/></div><div># rm /var/lib/apt/lists/* -vf<br/># apt-get
> update<br/><br/><br/></div><div>While this (somehow) works for me, it
> is a big nuisance. The update function of the package manager
> maintaining it's database shall be more robust to avoid it falling
> on it's head in the first place. Network connections can be
> unreliable and the software should be able to deal with
> it.<br/></div><div><br/></div><div>Cheers ..
> problembear<br/></div><div><br/></div><div><br/></div><div>
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Cheers, Gene
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