Ubuntu 20.04 (kernel 5.8.0) and Wi-Fi 6 AX200 is unstabe and doesn't show 2.4G networks

[rgiometti]

Hello,

in these last days I start notice a strange behavior on my Ubuntu 20.04 (kernel 5.8.0-45-generic) which manages a Wi-Fi 6 AX200 (rev 1a).

Network connection is very unstable with frequent disconnections and also I notice that the system is not able anymore to see 2.4G networks! Just 5G networks are displayed during a network scan.

Attached are modinfo information and trace-cmd output. Please, let me know if you need more info to investigate this really strange issue.

Thanks in advance,

Rodolfo

[DeividA_Intel]

Hello rgiomett,  

Thank you for posting on the Intel® communities.   

In order to better assist you, please provide the following:  

1. The brand and model number of your system. You can also provide the Intel® System Support Utility for the Linux* Operating System for more details: https://downloadcenter.intel.com/download/26735/Intel-System-Support-Utility-for-the-Linux-Operating-System

2. Is this the original adapter that came pre-installed on your computer or did you change/install the adapter to this one?   

3. Is the Bluetooth working?   

4. Is this a laptop or desktop computer? 

5. Have you update your drivers and BIOS? 

6. Did you noticed the issue after a system update? 

7. Run the following commands and send us the outcome:  

· modinfo iwlwifi > If there is no output, then the module isn’t installed this is the distribution installation issue.  

· lsmod | grep iwlwifi > 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 > If the result is empty, the driver wasn’t initialized and this is a distribution issue. If there is a result populated, proceed with the next step.   

· dmesg | grep “no suitable firmware found!” > 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.  

8. If the above steps don't work, collect the debug data:  

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 it from the wiki FW dump too.  

Regards,  

Deivid A. 

Intel Customer Support Technician 

[DeividA_Intel]

Hello rgiometti,  

Were you able to check the previous post and get the information requested? Please let me know if you need more assistance.   

Regards,  

Deivid A.  

Intel Customer Support Technician  

[DeividA_Intel]

Hello rgiometti,  

We have not heard back from you, so we will close this inquiry. If you need further assistance or if you have additional questions, please create a new thread and we will gladly assist you.  

Regards,  

Deivid A.  

Intel Customer Support Technician