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router not seeing ethernet connected to tower

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Hi all,

 

Having an issue with my tower. It worked previously in another home before I moved and since i have moved it no longer works. i have looked on the router and i see multiple wirelessly connected devices but the ethernet no longer shows (it worked previously to be clear). 

 

image.thumb.png.4a36aadc58fd5525bd97a7db1f162304.png

 

the ethernet lights up as if working, fans are spinning, disks spinning like theyre being read on start up but not showing. Ive tried getting to the gui mode but its not outputting on the DVI that I can get a display out of on the monitor (annoyingly), not sure how to make it present now. starting to run out of ideas on what to try/test next to work out whats going on. looking for any ideas, next things to try will be

  1. rebuild the boot stick.
  2. test connection on router to other devices (this is working as of writing this post)
  3. try a switch/another router to route traffic through 

 

any ideas appreciated. new to unraid, i had it made out the box for me which was great to start with but now when debugging its a detriment :'( when trying to find root cause issues out.

 

thanks

Solved by Frank1940

  • Community Expert
  • Solution

Connect a monitor and keyboard to your server.  Now boot up the server.  At the bottom of the monitor screen just above the login prompt, you will see your IP address.  Write it down. 

 

Now login using root and your Unraid password.

 

Then enter this command:

diagnostics

 

Note where the file is saved.   Then push the power button for about one second and the server will power down. 

 

Pull the flash drive and upload the diagnostics file in your next post.

 

Now look at that IP address and compare to the base IP address of your new router-- Not the Internet IP address.  The first three groups of numbers should be identical.  (If they are not that is probably where your problem is.)

  • Author
13 hours ago, Frank1940 said:

Connect a monitor and keyboard to your server.  Now boot up the server.  At the bottom of the monitor screen just above the login prompt, you will see your IP address.  Write it down. 

 

Now login using root and your Unraid password.

 

Then enter this command:

diagnostics

 

Note where the file is saved.   Then push the power button for about one second and the server will power down. 

 

Pull the flash drive and upload the diagnostics file in your next post.

 

Now look at that IP address and compare to the base IP address of your new router-- Not the Internet IP address.  The first three groups of numbers should be identical.  (If they are not that is probably where your problem is.)

 

funny enough this wasnt the issue but pointed me to fixing it. i found another article with the same issue and they pointed at rebuilding the flash drive which i did and now im back up and working again. went through a few issues. soem things of ntoe ill write in case someone encounters the same issue themselves,  my dvi -> hdmi did not work on the tower but my dvi -> vga did work to show an output, this showed a kernel error which was happening on boot so to overcome this i saved my config folder, reflashed the usb, dropped my configs back in the usb, made it bootable again and worked first try without issue.  one lesson learned amongst many was that LAN connection with lights does not mean its receiving anything if the kernel wont load, something ill keep in mind for future debugging

 

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