After upgrading to macOS Tahoe 26, my built-in Intel Ethernet (I219-LM2, Device ID 0x15B7) stopped working.

Question

Level 1

4 points

After upgrading to macOS Tahoe 26, my built-in Intel Ethernet (I219-LM2, Device ID 0x15B7) stopped working.

On macOS Sequoia, the same hardware works fine using the standard Apple driver, but on Tahoe the system shows “Ethernet: Not Connected” or gives me a self-assigned IP.

I already tried resetting NVRAM/SMC, reinstalling macOS, and testing with different network settings, but the issue persists.

Can you please confirm if there is a driver issue or compatibility problem with Intel I219-LM2 in macOS Tahoe 26?

Thank you.

iMac 27″, macOS 15.0

Posted on Sep 25, 2025 10:47 AM

Reply

Answer 1

Sep 25, 2025 10:50 AM in response to kareemlero

sound like you did your due diligence...

To be proactive you can file a bug report / submit your Apple Feedback here: Product Feedback - Apple

Call Customer Support (800) MY–APPLE (800–692–7753)

or on line https://getsupport.apple.com/

or call AppleCare Support at 1-800-APLCARE (800-275-2273)

Outside the USA—Contact Apple for support and service by phone

See a list of Apple phone numbers around the world.

Contact Apple Support - Apple Support

for known issue firmware patches would be pushed out with point-updates as they are released.

Reply