[mythtv-users] kernel upgrade broke networking

[Ken Truesdale]

I built my main backend just a month ago and discovered this morning I had a
bunch of updates sitting in Software Updater including some Mythbuntu
updates so I clicked to do the update.  When rebooting after the updates
finished, it gave a prompt saying "Waiting for server network
configuration..." which was followed by "Waiting up to 60 more seconds for
network configuration..." and then, about 60 seconds later, "Booting system
without full network configuration...".   And that was accurate: the eth0
network was missing.  

 

When I set up the computer, I had moved eth0 out of /etc/network/interfaces
and had set it up via the Settings -> Network Connections tool so I could
set it up with DHCP.  But after the update, the Network Connections tool
wasn't working - it wouldn't show me eth0 at all.  I put eth0 back into the
/etc/network/interfaces file and rebooted and confirmed that the network
jack was working fine (albeit now with DHCP instead of the IP I had set in
Network Connections).  I booted up and switched the kernel on boot to the
version prior to the update today and it booted fine and the network worked
fine.  

 

Figuring that something might have gone wrong with the install of the new
kernel version, I tried reinstalling the new kernel with (network was able
to connect to Internet because of adding eth0 to /etc/network/interfaces):

    sudo apt-get install --reinstall linux-image-3.13.0-36

As a result, it installed 3.13.0-36-lowlatency - what?  Lowlatency?  I
didn't ask for that.  Well, regardless, that new install added to my
bootlist and became default and didn't help the networking issue.  So I
removed it with:

    sudo apt-get remove linux-image-3.13.0-36-lowlatency

and then removed the kernel that installed during the software update
earlier:

    sudo apt-get remove linux-image-3.13.0-36-lowlatency

 

After putting back my xorg.conf that got moved during the kernel upgrade and
removing eth0 from /etc/network/interfaces, all is well again with kernel
3.13.0-35.  I am posting here so that anyone else that is thinking about
updating their kernel via software update may want to do a backup before
proceeding.  And if anyone wants to weigh in with what might have gone wrong
with this latest kernel and Network Connections, that might help others too.


 

Although in all likelihood this is a general Ubuntu issue, there are enough
of us running Mythbuntu and using Network Connections that it warranted
posting here.  Also, in case it matters, I have a Ceton PCI card installed
in the system that is also using the Networking interface.  I have changed
my Software Update settings so that it won't suggest such updates again!  

 

 

Ken.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.mythtv.org/pipermail/mythtv-users/attachments/20141002/8784bf1f/attachment.html>