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Wi-Fi 6 AX200 cannot open the 5G frequency band for hotspot use

Wi-Fi 6 AX200 product, using ubuntu 20.04 LTS operating system, using the third-party software hostapd recommended by Intel for management, only 2.4G frequency band can be turned on, 5G frequency band cannot be turned on, how to configure to turn on 5G frequency band, and 2.4 G can be used at the same time. Thank you!

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OS version screenshot

微信图片_20201018093023.png

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lspci

微信图片_20201018093017.png

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Third-party software hostapd version:

微信图片_20201018093013.png

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hostapd 5G configuration file

微信图片_20201018092948.png

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wifi驱动版本:https://github.com/intel/backport-iwlwifi

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Iw list command to view the supported frequency bands in ap mode:

微信图片_20201018092956.png

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The firmware version used by wifi:

微信图片_20201018092952.png

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./hostapd -d hostapd.conf run error

微信图片_20201018092943.png

 

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Can you help me determine what caused this error problem, thank you very much!

 

 

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DavidTseng, Thank you for posting in the Intel® Communities Support.

 

In reference to your inquiry, please try the following troubleshooting steps in order to determine if there might be a problem with the Wireless configuration:

 

WiFi troubleshooting steps

 

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

The reference table of Wireless adapters and corresponding kernel versions is available in the following 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 networidentifyk 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_0-1603131959995.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_1-1603132129555.png

 

Please type: # lsmod | grep iwlwifi​    

Alberto_R_Intel_2-1603132230732.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_3-1603132314914.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_4-1603132409336.png

 

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

Please visit here​ https://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

A Contingent Worker at Intel

 

 

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The following is a screenshot of the operation according to your steps, please help to see why there is no 5G signal?

step 1:   uname -a

1.png

2.png

step2:   lspci

3.png

step3:   modinfo iwlwifi

4.png

     lsmod | grep iwlwifi

5.png

    dmesg | grep iwlwifi

6.png

    step 4: dmesg | grep "no suitable firmware found!"

7.png

   step5: dmesg | grep ASSERT

8.png

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9.png

The 5G frequency band still cannot be turned on. Could you tell me where it is not configured? Which version of the operating system Intel is compatible with? 

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DavidTseng, Thank you very much for providing that information.


In reference to your question, we will do further research on this matter, as soon as I get any updates I will post all the details on this thread.


Regards,

Albert R.


Intel Customer Support Technician

A Contingent Worker at Intel


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Thanks for your help!

Yesterday, the step5 of the operation missed the debug operation.

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Open iwlwifi debug, but no more information.

cat .config

 
 

dmesg | grep wilwifi

2.png

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Looking forward to your more reply

 

 

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Hi Alberto ,

Saw the information from the https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi 

3.png

 

Does it mean that only Ap 2.4G mode is supported?

 

have a nice day!

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