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Wifi AC 8260 on Ubuntu 18.04 not working

gsmackers
Beginner
2,322 Views
I have an 8260 wireless module installed on a device running Ubuntu 18.04 with kernel 4.1. Apparently the kernel version is compatible and I have installed the correct firmware file in /lib/firmware. How do I get the device to load the driver and recognize the wifi card?
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gsmackers
Beginner
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More info: if I run "modprobe iwlwifi" I get a "could not find module" error. I have installed the linux-firmware package and there are iwlwifi firmware files in /lib/firmware including the one for this wifi module.
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Alberto_R_Intel
Moderator
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gsmackers, Thank you for posting in the Intel® Communities Support.

 

In order for us to provide the most accurate assistance on this scenario, first, we just wanted to confirm a few details about your system:

What is the model of the motherboard?

If this is a laptop, what is the model of it?

Were you able to use Ubuntu along with the Intel® wireless card on this specific machine before? 

The wireless card, did you purchase it separately or did it come installed on the computer?

Does the problem happen at home or in the work environment?

 

WiFi troubleshooting steps

 

Step 1: Check whether the kernel version customer uses supports this device:

The reference table of Wireless adapters and corresponding kernel versions is available by the link: https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi

The latest FWs are available by the following link:​ ​https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/

If the kernel version corresponds to the Wireless adapter, proceed with step 2.

 

Step 2: Check whether the Wireless adapter is connected correctly:

Type the following command to the terminal: # lspci​ 

Verify that the Intel network controller ​is identified, as on a picture below. If not, then the system doesn't identify the Intel network adapter and you will need to make sure it's properly integrated. You may need to request help from the system manufacturer. If the wireless adapter is properly identified - proceed with the step 3.

Alberto_R_Intel_0-1655840241318.png

 

 

Step 3: Check whether this is an iwlwifi issue:

Type the following command to the terminal: # modinfo iwlwifi​ (example of the command output is on the picture below). If there is no output, then the module isn’t installed this is the distribution installation issue.

Alberto_R_Intel_1-1655840241139.png

 

 

Please type: # lsmod | grep iwlwifi​    

Alberto_R_Intel_2-1655840241181.png

 

 

If the result is empty, the driver hasn't been loaded. Most likely to be a distribution issue.

To verify, please type: # dmesg | grep iwlwifi​    

Alberto_R_Intel_3-1655840241245.png

 

If the result is empty, the driver wasn’t initialized and this is a distribution issue. If the result is populated as on the above picture, proceeed with the step 4.

 

Step 4: Check whether the suitable firmware is installed:

Please type: # dmesg | grep “no suitable firmware found!”​

Alberto_R_Intel_4-1655840241131.png

 

 

If the result is not empty, it means you don't have a suitable FW (api mentioned in the dmesg).

Please visit here​ h​ttps://wireless.wiki.kernel.org/en/users/drivers/iwlwifi for supported FW, or here​ ​https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/ for the latest versions.

If these steps didn't reveal the issue or didn't solve the problem, proceed with the Step 5: 

 

Step 5: Collect the debug data:

Please type: # dmesg | grep ASSERT​ 

If the output is empty, please follow this wiki: https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi/debugging to extract dmesg and trace-cmd.

If the output has value, please collect from the wiki FW dump too.

 

Any questions, please let me know.

 

Regards,

Albert R.

 

Intel Customer Support Technician

 

 

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Alberto_R_Intel
Moderator
2,264 Views

Hello gsmackers, I just wanted to check if you saw the information posted previously and if you need further assistance on this matter?


Regards,

Albert R.


Intel Customer Support Technician


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Alberto_R_Intel
Moderator
2,248 Views

Hello gsmackers, Since we have not heard back from you, we are closing the case, but if you have any additional questions, please post them on a new thread so we can further assist you with this matter.


Regards,

Albert R.


Intel Customer Support Technician


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Alberto_R_Intel
Moderator
2,248 Views

Hello gsmackers, Since we have not heard back from you, we are closing the case, but if you have any additional questions, please post them on a new thread so we can further assist you with this matter.

 

As an option, you can also visit our Linux* Support for Intel® Wireless Adapters site for further assistance on this matter:

https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi

 

Regards,

Albert R.

 

Intel Customer Support Technician

 

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