<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14px"><div id="yui_3_16_0_ym19_1_1480953198902_24285"><br></div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27084">BTW, there's a 40KB limit on posting to this list, and something/someone bloats the hell out of what I post (maybe it's yahoo) so I'm going to have to butcher the hell out of my measly little text-only post to get it through.  Apologies.</div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27085"><br></div><div role="presentation" style="" tabindex="0" id="yui_3_16_0_ym19_1_1480953198902_27185"><div id="yui_3_16_0_ym19_1_1480953198902_27186"><div id="yui_3_16_0_ym19_1_1480953198902_27187"><div id="yui_3_16_0_ym19_1_1480953198902_27188"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14px;" id="yui_3_16_0_ym19_1_1480953198902_27189"><div id="yui_3_16_0_ym19_1_1480953198902_27190">Hello CALUG,</div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27191">        
 I don't even know where to begin with this.  It all goes back to a 
motherboard I bought 3 years ago, with a built-in ethernet chipset 
(RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller) that just 
doesn't seem well-supported by Linux.  I tried to fix it then but 
eventually gave up and just started using a USB-to-ethernet adapter, 
which worked fine for years.</div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27192">        
 This week I decided to upgrade from Ubuntu 15.10 to 16.10, in two 
hops.  The first hop, from 15.10 to 16.04.1 LTS, worked perfectly fine. 
 But when I try to do the 16.04 to 16.10 upgrade, I get all sorts of 
errors, from start to finish, that I've never gotten before.  Starting 
with:</div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27193">---------------------------------------------------------------------------------------------------------------------------------------------<br id="yui_3_16_0_ym19_1_1480953198902_27194"></div> <i id="yui_3_16_0_ym19_1_1480953198902_27195">$ sudo apt-get update<br id="yui_3_16_0_ym19_1_1480953198902_27196">Ign:1 http://dl.google.com/linux/chrome/deb stable InRelease<br id="yui_3_16_0_ym19_1_1480953198902_27197">Hit:2 http://archive.canonical.com/ubuntu saucy InRelease                                 <br id="yui_3_16_0_ym19_1_1480953198902_27198">Hit:3
 http://de.archive.ubuntu.com/ubuntu xenial 
InRelease                                                                               
  <br id="yui_3_16_0_ym19_1_1480953198902_27199">...<br id="yui_3_16_0_ym19_1_1480953198902_27204">Get:10 http://dl.google.com/linux/chrome/deb stable Release.gpg [916 B]                                                        <br id="yui_3_16_0_ym19_1_1480953198902_27205">Get:7
 http://de.archive.ubuntu.com/ubuntu xenial-updates InRelease [102 
kB]                                                                <br id="yui_3_16_0_ym19_1_1480953198902_27206">Get:8 http://deb.opera.com/opera-stable stable InRelease [2,592 B]                                                 <br id="yui_3_16_0_ym19_1_1480953198902_27207">Err:3 http://de.archive.ubuntu.com/ubuntu xenial InRelease                                                                      <br id="yui_3_16_0_ym19_1_1480953198902_27208">  At least one invalid signature was encountered.<a href="http://dl.goog/">http://dl.goog</a> <br id="yui_3_16_0_ym19_1_1480953198902_27216">...<br id="yui_3_16_0_ym19_1_1480953198902_27217"> <br id="yui_3_16_0_ym19_1_1480953198902_27218">W:
 Failed to fetch 
http://dl.google.com/linux/chrome/deb/dists/stable/Release.gpg  At least
 one invalid signature was encountered.<br id="yui_3_16_0_ym19_1_1480953198902_27219">W: Some index files failed to download. They have been ignored, or old ones used instead.<br id="yui_3_16_0_ym19_1_1480953198902_27220">$ <br id="yui_3_16_0_ym19_1_1480953198902_27221"></i><br id="yui_3_16_0_ym19_1_1480953198902_27222"><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27223">---------------------------------------------------------</div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27224"><br id="yui_3_16_0_ym19_1_1480953198902_27225"></div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27226">I
 have no idea if those errors are fatal or not (as per google, I tried 
tinkering with the /etc/apt/sources.list file , which reduced the number
 of errors, but still left many errors.  But the file seems to be 
restored to its original condition regardless of what I do.)</div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27227"><br id="yui_3_16_0_ym19_1_1480953198902_27228"></div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27229">Then I do "sudo do-release-upgrade" (I'll put what I can of output below my comments, because it's so long.)  It says <br id="yui_3_16_0_ym19_1_1480953198902_27230"></div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27231"><br id="yui_3_16_0_ym19_1_1480953198902_27232"></div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27233">"Error during update <br id="yui_3_16_0_ym19_1_1480953198902_27234">A problem occurred during the update. This is usually some sort of <br id="yui_3_16_0_ym19_1_1480953198902_27235">network problem, please check your network connection and retry. "</div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27236"><br id="yui_3_16_0_ym19_1_1480953198902_27237"></div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27238">But
 clearly there is no network problem (I'm emailing you from that very 
machine), unless maybe it's confused by the USB ethernet adapter or some
 such thing??  Everything I'm doing is identical to what I did for the 
15.10->16.04 upgrade, which worked fine. So what can I be doing 
wrong?</div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27239"><br id="yui_3_16_0_ym19_1_1480953198902_27240"></div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27241">Thanks very much, and cheers - Ed<br id="yui_3_16_0_ym19_1_1480953198902_27242"></div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27243"><br id="yui_3_16_0_ym19_1_1480953198902_27244"></div><div dir="ltr" id="yui_3_16_0_ym19_1_1480953198902_27245">-----------------------------------------------------------------------------------------------------<br id="yui_3_16_0_ym19_1_1480953198902_27246"></div><i id="yui_3_16_0_ym19_1_1480953198902_27247">$ sudo do-release-upgrade<br id="yui_3_16_0_ym19_1_1480953198902_27248">Checking for a new Ubuntu release<br id="yui_3_16_0_ym19_1_1480953198902_27249">Get:1
 Upgrade tool signature [198 
B]                                                                                                                                                                                                                        
 <br id="yui_3_16_0_ym19_1_1480953198902_27250">Get:2 
Upgrade tool [1,258 
kB]                                                                                                                                                                                                                               
 <br id="yui_3_16_0_ym19_1_1480953198902_27251">Fetched 
1,258 kB in 0s (0 
B/s)                                                                                                                                                                                                                              
 <br id="yui_3_16_0_ym19_1_1480953198902_27252">authenticate 'yakkety.tar.gz' against 'yakkety.tar.gz.gpg' <br id="yui_3_16_0_ym19_1_1480953198902_27253"></i><div id="yui_3_16_0_ym19_1_1480953198902_27254"><i id="yui_3_16_0_ym19_1_1480953198902_27255">extracting 'yakkety.tar.gz'</i></div><div id="yui_3_16_0_ym19_1_1480953198902_27256"><i id="yui_3_16_0_ym19_1_1480953198902_27257">...</i></div><i id="yiv0708280270yui_3_16_0_ym19_1_1480953198902_17464">Err
 http://deb.opera.com/opera-stable stable 
InRelease                                                                                                                                                                                                      
 <br id="yui_3_16_0_ym19_1_1480953198902_27259">  At least 
one invalid signature was 
encountered.                                                                                                                                                                                                           
 <br id="yui_3_16_0_ym19_1_1480953198902_27260">Ign 
http://security.ubuntu.com/ubuntu yakkety-security 
InRelease                                                                                                                                                                                            
 <br id="yui_3_16_0_ym19_1_1480953198902_27261">...                                                                                                                                                                            
 <br id="yui_3_16_0_ym19_1_1480953198902_27263">Ign 
http://de.archive.ubuntu.com/ubuntu yakkety 
InRelease                                                                                                                                                                                                   
 <br id="yui_3_16_0_ym19_1_1480953198902_27264">Ign 
http://de.archive.ubuntu.com/ubuntu yakkety-updates 
InRelease                                                                                                                                                                                           
 <br id="yui_3_16_0_ym19_1_1480953198902_27265">Ign 
http://de.archive.ubuntu.com/ubuntu yakkety-backports 
InRelease                                                                                                                                                                                         
 <br id="yui_3_16_0_ym19_1_1480953198902_27266">Fetched 567
 kB in 0s (0 
B/s)                                                                                                                                                                                                                                
 <br id="yui_3_16_0_ym19_1_1480953198902_27267"><br id="yui_3_16_0_ym19_1_1480953198902_27268">Error during update <br id="yui_3_16_0_ym19_1_1480953198902_27269"><br id="yui_3_16_0_ym19_1_1480953198902_27270">A problem occurred during the update. This is usually some sort of <br id="yui_3_16_0_ym19_1_1480953198902_27271">network problem, please check your network connection and retry. <br id="yui_3_16_0_ym19_1_1480953198902_27272"><br id="yui_3_16_0_ym19_1_1480953198902_27273"><br id="yui_3_16_0_ym19_1_1480953198902_27274">Restoring original system state<br id="yui_3_16_0_ym19_1_1480953198902_27275"><br id="yui_3_16_0_ym19_1_1480953198902_27276">Aborting<br id="yui_3_16_0_ym19_1_1480953198902_27277">Reading package lists... Done    <br id="yui_3_16_0_ym19_1_1480953198902_27278">Building dependency tree          <br id="yui_3_16_0_ym19_1_1480953198902_27279">Reading state information... Done<br id="yui_3_16_0_ym19_1_1480953198902_27280"></i><div dir="ltr"><i id="yui_3_16_0_ym19_1_1480953198902_27258">$ </i></div></div></div></div></div></div></div></body></html>