Networking keeps stopping

[Homer]

On Fri, Apr 29, 2011 at 7:47 AM, Jonathan M. Prigot <jprigot at verizon.net> wrote:
> So, how did it go?

So far, so good.  I freed up space on / yesterday morning, so I'm
about 36 hours without trouble.  I did delete knetworkmanager at about
the same time though, so I can't say what helped.  Thanks again for
the suggestions.


> On Thu, 2011-04-28 at 08:48 -0600, Homer wrote:
>> On Wed, Apr 27, 2011 at 6:36 PM, Jonathan M. Prigot <jprigot at verizon.net> wrote:
>> > OK, try de-installing knetworkmanager and see if that does it.
>>
>> I just uninstalled network-manager-kde.  During that process I
>> realized that / was at 100%.  I cleared some junk out and it is now at
>> 79%.  One package had not properly been updated because of that.  It
>> was the linux-firmware package.  No idea if that could be the culprit,
>> but it has now been updated.  I'll report back later today.
>>
>>
>>
>> > On Wed, 2011-04-27 at 16:18 -0600, Homer wrote:
>> >> On Wed, Apr 27, 2011 at 2:48 PM, Jonathan M. Prigot <jprigot at verizon.net> wrote:
>> >> > Yup. The usual entries are for NAMESERVER, DOMAIN, and optionally
>> >> > SEARCH. As to Ubuntu not using it anymore, you've seen what happens if
>> >> > that information is not there. As to where the contents of resolv.conf
>> >> > has gone (3 times), that's the mystery we are trying to solve, isn't it?
>> >>
>> >> Four times now.  Uggg.  Heading home in a sec, so will have to pick it
>> >> up tomorrow.  Thank you for the comments/insight on this.
>> >>
>> >>
>> >> > On Wed, 2011-04-27 at 14:35 -0600, Homer wrote:
>> >> >> On Wed, Apr 27, 2011 at 11:31 AM, Jonathan M. Prigot
>> >> >> <jprigot at verizon.net> wrote:
>> >> >> > Well KNetworkManager is just the front end to NetworkManager. I've
>> >> >> > always "apt-get removed" on my systems that need full manual control of
>> >> >> > the network.
>> >> >>
>> >> >> I'll consider doing that.  I was just reviewing your previous
>> >> >> responses.  Is it correct to say that resolv.conf should contain the
>> >> >> dns and domain information?  I thought I had read way back that ubuntu
>> >> >> no longer used that file.  If it should be populated with that info,
>> >> >> then it is curious that it has been deleted three times.  We know I
>> >> >> don't have DHCP running, so what else would delete the contents of
>> >> >> that file?
>> >> >>
>> >> >>
>> >> >> > On Wed, 2011-04-27 at 11:24 -0600, Homer wrote:
>> >> >> >> On Wed, Apr 27, 2011 at 10:52 AM, Jonathan M. Prigot
>> >> >> >> <jprigot at verizon.net> wrote:
>> >> >> >> > Best indication would be "ps -ef|grep dh". If anything but your "grep"
>> >> >> >> > command comes up, then you are running a DHCP client. Not sure if this
>> >> >> >> > applies, but NetworkManager often sneaks this.
>> >> >> >>
>> >> >> >> No DHCP is running.  I took a look at Network Connections under System
>> >> >> >> Settings.  Nothing is configured there.  What about KNetworkManager?
>> >> >> >> "ps -ef|grep net" indicates it is running.  Is that something I can
>> >> >> >> configure?  If I select it from the K menu, nothing happens.
>> >> >> >>
>> >> >> >>
>> >> >> >>
>> >> >> >>
>> >> >> >> > On Wed, 2011-04-27 at 10:38 -0600, Homer wrote:
>> >> >> >> >> On Wed, Apr 27, 2011 at 10:23 AM, Jonathan M. Prigot
>> >> >> >> >> <jprigot at verizon.net> wrote:
>> >> >> >> >> > My guess is that you are using DHCP on your network. The DHCP server is
>> >> >> >> >> > responsible for supplying the entries in /etc/resolv.conf. Someone at
>> >> >> >> >> > the server end probably deleted those entries. As you see, you can
>> >> >> >> >> > manually edit the /etc/resolv.conf file, but when the DHCP client on
>> >> >> >> >> > your machine refreshes, they disappear.
>> >> >> >> >>
>> >> >> >> >> Good guess, but my machine has always had a static IP.  We are moving
>> >> >> >> >> to DHCP here, but I've been a hold out for a number of reasons.  Might
>> >> >> >> >> I have DHCP running on my machine I don't know about?  I always
>> >> >> >> >> configure my network info by editing the /etc/network/interfaces file,
>> >> >> >> >> and that has always worked.
>> >> >> >> >>
>> >> >> >> >>
>> >> >> >> >>
>> >> >> >> >> > On Wed, 2011-04-27 at 10:07 -0600, Homer wrote:
>> >> >> >> >> >> Kubuntu 10.04
>> >> >> >> >> >>
>> >> >> >> >> >> Yesterday the networking on my machine stopped working.  I figured it
>> >> >> >> >> >> was something in the building as I didn't make any changes on my
>> >> >> >> >> >> computer that preceded the stoppage.  Ultimately the IT folks here
>> >> >> >> >> >> concluded the problem was I didn't have any entries in my
>> >> >> >> >> >> /etc/resolv.conf file.  They added the nameservers and dns-search,
>> >> >> >> >> >> which got things going, and my machine was declared fixed.  I was
>> >> >> >> >> >> dubious.
>> >> >> >> >> >>
>> >> >> >> >> >> This morning networking stopped again.  A quick check of the
>> >> >> >> >> >> resolv.conf file showed it again to be empty.  I made the changes and
>> >> >> >> >> >> restarted networking and was off again.  Then it stopped again 30
>> >> >> >> >> >> minutes later.  resolv.conf was again empty.  I repeated the above
>> >> >> >> >> >> steps, and am posting here before it quits again.
>> >> >> >> >> >>
>> >> >> >> >> >> Anyone have any idea what is really going on?  I'm stumped, but that's
>> >> >> >> >> >> not hard to do.  I updated my machine the day prior to the first
>> >> >> >> >> >> stoppage.  No other OS fiddling.
>> >> >> >> >> >>
>> >> >> >> >> >
>> >> >> >> >> >
>> >> >> >> >> > --
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>> >> >> >> >
>> >> >> >> >
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>> >> >> >
>> >> >> >
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