XPost: uk.comp.os.linux, alt.comp.microsoft.windows, alt.comp.os.windows-11   
   From: java@evij.com.invalid   
      
   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   
      
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