Wireless
Participate in insightful discussions regarding issues related to Intel® Wireless Adapters and technologies
7455 Discussions

AX201 issues with receiving PHY rate

krtinicfix
Beginner
‎09-10-2022 11:45 AM
932 Views

I'm having an issue with RX Data Rate of the laptops WiFi. All the other clients with dual stream capable WiFi interfaces manage to connect with dual streams for both receiving and transmitting part of the connection, but this laptop is only achieving dual streams on the transmitting (upload), and only single stream for receiving (download). This results in SMB transfer speeds of 30MB/s, instead of the at least expected 50MB/s. The laptop is in the same room as the laptop. Selecting other 80MHz channels doesn't help.

I didn't try installing Intel's 22.160.0 driver. The current one installed is 22.130.0.5 which is the latest provided by Windows Update and Dell's update service. Should I try the 22.160.0 driver, will it help?

 

Laptop in question:

Dell G15 5520, Intel i7-12700H

Windows 11

 

Router in question:

Mikrotik hAP ac2

https://mikrotik.com/product/hap_ac2

Wireless chip: IPQ4018/IPQ4019

Software version: 7.4.1

 

krtinicfix_0-1662834901352.png

krtinicfix_1-1662834919800.pngkrtinicfix_2-1662834923653.png

 

0 Kudos

Link Copied

8 Replies
Jean_Intel
Employee
‎09-12-2022 02:35 PM
902 Views

Hello krtinicfix,


Thank you for posting on the Intel️® communities.  


To have a better understanding of your issue, please provide me with the following:

  • When did the issue start to happen?
  • Is this the original adapter that came pre-installed in your system, or have you changed/installed a new adapter?
  • Have you checked if this issue happens on different networks?
  • Were you able to have your wireless connection in a normal/expected performance before?
  • What do you mean by saying 'dual stream capable WiFi interfaces'?


About installing driver 22.160.0, keep in mind that Intel generic graphics drivers are intended for testing, and we recommend using the Manufacturer drivers. However, if you want to try it, you can try our driver since it has the latest features and fixes that may solve your issue.

https://www.intel.com/content/www/us/en/download/19351/windows-10-and-windows-11-wi-fi-drivers-for-intel-wireless-adapters.html


Best regards, 

Jean O.  

Intel Customer Support Technician


0 Kudos
Copy link
krtinicfix
Beginner
‎09-13-2022 09:55 AM
889 Views
In response to Jean_Intel
  • The laptop is new and bought recently, so since always.
  • It's the original that came inside the laptop
  • No, and I can't really check that. Other devices are working properly and at full speed at the network, so I'm guessing compatibility issue with the wireless chip
  • Not with that laptop, but with all other devices works properly
  • Dual chain devices, 2x2 MIMO

I've installed the 22.160.0 WiFi driver. Interesting observation is that laptop would initialize with 866Mbps RX data rate (dual stream), but after trying to transfer a large file over the network it would drop down to 433Mbps RX data rate (single stream). TX works properly as expected.

 

In response to Jean_Intel
0 Kudos
Copy link
Jean_Intel
Employee
‎09-13-2022 01:28 PM
880 Views

Hello krtinicfix,


Thanks for the information provided.


I want to confirm more information about your issue.

  • Is the performance affected if you don't transfer a large file?
  • When you try transferring the same file on other devices, does the Wireless connection work as expected?
  • How are you checking the connection Speeds?
  • To have more information about the environment of your issue, such as the Operating system and drivers version, please, create a report using the Intel System Support Utility (Intel SSU)  


Best regards, 

Jean O.  

Intel Customer Support Technician


0 Kudos
Copy link
krtinicfix
Beginner
‎09-13-2022 02:18 PM
868 Views
In response to Jean_Intel
  • I didn't understand the question. WiFi is not operating in dual stream mode but the single stream mode.
  • iPhones can do 400Mbps Speedtest (it's a 500Mbps internet), other laptops only have single chain WiFi cards so I can't really tell, but wired transfers work 120MB/s. This laptop with the AX201 card can only do about 200Mbps Speedtest (without any other traffic on the network).
  • Sending a file to a SMB network share on a NAS that's capable of utilizing the full gigabit speed that wired network offers.
  • What information will you be looking in the report? What do you mean to find inside it that's related to the WiFi issue? What else do you expect to find out beside the informations I already gave you about and screenshots that I've sent? Can I review the content of the report before submitting it to you?.

I'm making aware of an existing issue with some decent details about it. It's a common router used worldwide, there's probably many more routers with the same chipand compatibility issue with it might not be something you'd like to ignore so I wanted to make you aware of the problem, and maybe other people that they're not alone and confirm that there's an issue.

In response to Jean_Intel
0 Kudos
Copy link
Jean_Intel
Employee
‎09-13-2022 03:05 PM
863 Views

Hello krtinicfix,


I appreciate the information provided.


The report was to confirm if the system was up to date, checking drivers, Operating system, and BIOS versions; this would help us to have more details to investigate your issue. However, I would bring the information about your problem to the Wireless department, and we will discuss it internally. I will post back soon with more details. 


Best regards, 

Jean O.  

Intel Customer Support Technician


0 Kudos
Copy link
Jean_Intel
Employee
‎09-14-2022 02:16 PM
814 Views

Hello krtinicfix,


Thanks for waiting for a response.

 

To continue with our investigation, please, provide me with the following:

  • How many devices are affected?
  • You mentioned other devices are not affected. Do the other devices have the same AX201 card?
  • Does the same happen with OEM drivers?
  • So this device wired connected is capable of reaching 120Mbps without any issue?
  • Have you made sure that the system has the latest Firmware version?
  • To confirm that your system is running the latest Drivers, BIOS version, and the latest Operating System Build, please, provide me with the Intel System Support Utility (Intel SSU) report.


Best regards, 

Jean O.  

Intel Customer Support Technician


0 Kudos
Copy link
Jean_Intel
Employee
‎09-16-2022 07:16 AM
799 Views

Hello krtinicfix,


I hope you are doing fine.


Were you able to check the previous post?

Let us know if you still need assistance.


Best regards, 

Jean O.  

Intel Customer Support Technician


0 Kudos
Copy link
Jean_Intel
Employee
‎09-20-2022 07:23 AM
770 Views

Hello krtinicfix,

 

I hope you are doing fine.

 

I have not heard back from you. So we will close this thread. If you need any additional information, submit a new question, as this thread will no longer be monitored.

 

Best regards.

Jean O. 

Intel Customer Support Technician.


0 Kudos
Copy link
Reply

Community support is provided during standard business hours (Monday to Friday 7AM - 5PM PST). Other contact methods are available here.

Intel does not verify all solutions, including but not limited to any file transfers that may appear in this community. Accordingly, Intel disclaims all express and implied warranties, including without limitation, the implied warranties of merchantability, fitness for a particular purpose, and non-infringement, as well as any warranty arising from course of performance, course of dealing, or usage in trade.

For more complete information about compiler optimizations, see our Optimization Notice.