Having some issue with my new WiFi card on Linux Mint. I decided to upgrade and bought an Intel Wireless-AC 9260 for my laptop. Previous card was an Intel model 8260. The 8260 worked fine, but with the new 9260 in place, Bluetooth appears to work but not WiFi. For some reason Mint "Failed to Detect Network Card"

Laptop is a Dell Inspiron 14-3452.

Intel Pentium N3700 CPU
4GB Memory
Samsung SSD
Intel HD Graphics 405 (Braswell)

Linux Mint 18.3 Cinnamon, Kernel: 4.15.0-22-generic x86_64

Please help a fellow penguin out. Thanks!

if you had your other card working from install, that is when it was detected and the proper drivers for that other card were installed, now you got a different card, needs different driver.

Intel says,
Intel® Wireless-AC 9260 4.14+ iwlwifi-9260-th-b0-jf-b0-34.618819.0.tgz

you need to search your repo for the proper wifi driver for your new card. that is where I'd start.

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Try this maybe. https://www.intel.com/content/www/us...etworking.html

A M.2 or usb device may need to be known too. Since bluetooth works that is a good sign to start.

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I know when I upgraded on Debian the 9260 firmware wasn't available yet, so that's where I'd start. Do you have the /lib/firmware/iwlwifi-9260* files?

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Yes I had those files. Tried to replace them with the one from Intel's site. Believe I succeeded, still only Bluetooth.

This is the card that I bought: Amazon.

Tomorrow I will search Google some more.

Check your wiring to be sure you have it seated properly and the correct wires in the correct sockets.

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Was very careful with the new card, to install it safely. Pretty sure I seated it properly in the slot. The antenna wires were tricky
to connect because the sockets are small. I did match up the black and white wires, connected them successfully. I also was careful to prevent electrostatic damage.

The card took several weeks to be delivered, Amazon had said it was lost in transit. Eventually was delivered though. Maybe it was damaged in that time? If it doesn't work under Windows 10, do you think I should return it?

yes.

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I installed Windows 10 and it still does not work. Then Bluetooth died. Will try and get a refund.

My other card works fine, so I reinstalled it. Thanks everyone.