Network Connection Indicator Icon Disabled.

The Internet connection icon in the notification area of my desktop panel shows the status of my computer's connection to my LAN and hence to the www – at least, it did from the date of first connection, in late 2013, until about December of 2014. It was infallible. Then, shortly before Christmas last year, router trouble on the LAN meant that no Internet service was available for the best part of a week whilst repairs/replacements were effected. Restoration of the LAN brought all four of my computers back on line (1 Linux Mint and 3 Windows XP) Ostensibly nothing had, nor needed to be, changed, as far as net connection addresses were concerned. The XP computers simply picked up where they had left off some days earlier but the Linux machine returned with a disabled LAN connection icon that has remained in that state ever since. Nothing else is affected, I continue to log on and off as normal and enjoy the same network services as before but nothing will now persuade the connection icon to change its disconnected state. If I right click the icon, and then click 'Connection Information', I get, “No valid active connections found,” which is at complete variance with the facts. I have used the 'Edit Connections' option but can find nothing apparently amiss. Wired Connection 1 appears to have retained its previous settings so the loss of function is a bit of a mystery. Anyone got any ideas?


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