Ethernet interface disappeared
As I rebooted my laptop this morning, I didn't more wired Ethernet network. I have not installed updates yesterday, but yesterday it worked correctly. It is not a problem with the router or the cable, because it works correctly with the other laptop. The router detects when I connect the cable (the port lights) but the router has no ARP entry for the connection (only for wifi that I need to write this question). In addition, it still works the WiFi.
Restarting the laptop does not help. I opened 'Network Preferences' and I removed the Ethernet network in order to recreate, but surprisingly, the 'Ethernet' interface does not appear in the list more (it is available WiFi, Firewire, Thunderbolt 1, Thunderbolt and Bluetooth PAN bridge). With the Network Diagnostics didn't help either. I also tried to test the equipment with the Apple Diagnostics (by pressing D when starting the laptop), but I did not need to start the diagnostics.
It seems that the ethernet driver has been uninstalled or misconfigured.
I have a Mac Book Pro (2011) with OSX El Capitan.
Any advice on what to do?
Thanks in advance
You can take a look at the thread below. Mac model is different, but could be the same cause as your punishment.
Tags: Notebooks
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