XPost: uk.comp.os.linux, alt.comp.microsoft.windows, alt.comp.os.windows-11   
   From: V@nguard.LH   
      
   Java Jive  wrote:   
      
   > In case it's helpful to anyone else ...   
   >   
   > I have some Dell Precision M6800s & M6700s dual-booting via Grub between   
   > various versions of Windows and Ubuntu 24, all cabled to the LAN.  If I   
   > choose to move between any version of Windows and Ubuntu by rebooting,   
   > Ubuntu 24 cannot make a reliable cabled LAN connection, it keeps trying   
   > to connect but never succeeds.  However, if I choose to move between any   
   > version of Windows and Ubuntu by shutting down the PC in between, Ubuntu   
   > 24 'just works', no networking problem at all.  Reboot from U24 and go   
   > back into U24, the situation is unchanged  -  if it was working before   
   > the reboot, it's working now, if it wasn't working before the reboot, it   
   > isn't working now.  Reboot from U24 and go back into Windows, no network   
   > problems in Windows at all.  Reboot from Windows and go back into any   
   > version of Windows, no network problems at all.   
   >   
   > In summary, when rebooting ...   
   >      Ubuntu 24 -> Ubuntu 24    No change   
   >      Ubuntu 24 -> Windows      No problem   
   >      Windows -> Ubuntu 24      U24 cannot make cabled LAN connection   
   >      Windows -> Windows        No problem   
   >   
   > It seems to me from this that the cabled network hardware is not being   
   > properly initialised when booting Ubuntu 24.  The cure is simply to   
   > actually power down the PC before launching Ubuntu 24   
      
   Don't know what are the "networking problems".  In each scenario, can   
   you connect to the internal web server in the cable modem, router, or   
   whatever you have upstream of the problematic host?  Check if you can do   
   intranet connections before testing if you can get to the Internet.   
      
   Does the upstream web server (cable modem, router) report the same MAC   
   each time you reboot?  When you have network problems, does it even see   
   the MAC address for your problematic host?  I'm wondering if outside   
   your problematic host if anything else sees it.   
      
   --- SoupGate-Win32 v1.05   
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