XPost: uk.comp.os.linux, alt.comp.microsoft.windows, alt.comp.os.windows-11   
   From: robin_listas@es.invalid   
      
   On 2025-11-15 15:39, 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   
      
   Similar problems have been described long before.   
      
      Booting Windows -> Linux, worked.   
      Booting Linux from scratch, did not work.   
      
   The reason was the Linux driver, developed by reverse engineering   
   probably, did not initialize the network hardware properly, they did not   
   know something that had to be done.   
      
   After they knew this, the developer wrote something else to the driver,   
   and it worked.   
      
   In your case, Windows leaves the eth hardware in a state the Linux   
   driver can not handle. Open a bug with the Ubuntu people, somehow.   
      
   --   
   Cheers, Carlos.   
   ES🇪🇸, EU🇪🇺;   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)