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Macbook Pro Mid 2012. The problem was there before upgrade, but recently upgraded to Mojave ( thought it might fix it )

I suspect a bad WiFi card, but the symptoms are very strange, and does not indicate the "Hardware Not Found" error.

• On Boot, WiFi works great, but will shut off anywhere from 30 minutes to 3 hours.

•The WiFi states that it is OFF, and I cannot turn it on via restarting the wireless service via command line or System preferences. Pressing the "Turn Wi-Fi On" button does nothing. The only way to fix is a power off and power on.

enter image description here

•The same problem has occurred on both recovery OS, a system update, and a fresh install ( booted off a different hard drive with a fresh install of MAC), so I have confirmed not a software issue.

•The WiFi Diagnostics tool has not returned anything useful except something along the lines of "enable WiFi and connect to a WiFi network".

•Resetted SMC / PRAM, still have issue

•The well-known typical "hardware not found" message has rarely shown up, I may have seen this happen once, but it is usually the strange problem with WiFi not being able to turn on, not a hardware error message.

EDIT: During Down times, here is what is shown under the WiFi menu on about this Mac: enter image description here

When the Wi-Fi is working, here is what it shows: enter image description here

The only difference is the Country code is set to "X0" whenever it is not working, but was pointed out that I need to connect to network for country code to be found.

EDIT: Output of

log show --predicate '(processImagePath contains "kernel") && (eventMessage contains "AirPort: Link Down")' --style syslog --last 1d

enter image description here

What are the next steps I can take to diagnose this problem?

  • during the down times, what does it show in About this Mac > WiFi ? also are you on some kind managed Mac, or Parental control ? Did you try to log in as different user ? – Ruskes Nov 23 '18 at 4:05
  • I added a screenshot of what it shows. – Skyler 440 Nov 23 '18 at 4:09
  • thanks, so the hardware is all there but something has tuned it off. – Ruskes Nov 23 '18 at 4:13
  • OK, lets run log show --predicate '(processImagePath contains "kernel") && (eventMessage contains "AirPort: Link Down") --style syslog --last 1d to show why it was down for last 24 hours – Ruskes Nov 23 '18 at 4:15
  • also try to tun it on with sudo ifconfig en1 up ` – Ruskes Nov 23 '18 at 4:17

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