Meraki MR46 and Lenovo E480 (with Realtek 8822BE Wireless LAN 802.11ac) packet loss problem

SOLVED
MedarV
Here to help

Meraki MR46 and Lenovo E480 (with Realtek 8822BE Wireless LAN 802.11ac) packet loss problem

Dear All, 

 

I have a significant problem communicating with MR46 and Realtek wifi adaptor. During communication always appears request time out while pinging. 

 

We have 220 Lenovo E480 (%80 of all laptops) and 101 AP with Meraki MR46. Realtek adaptor driver which is last version requested on Lenovo web site (version 2024.0.8.122) is not working properly. It causes time out. 

 

We are using meraki system in school. Zoom is our most using program during this period. If packet loss appears then Zoom starts to freeze and people cannot finish their meeting with good quality. 

 

We found another older driver for realtek and I guess this driver produced for Asus laptops. Driver version is 2023.72.1215.2017. We are using this driver for two days. It seems working better but we are not sure that we will face another problem or not. 

 

And we found another solution to change realtek wifi adaptor with Intel (which is using in Lenovo E490) then E480 is working with Meraki without problem. But it is expensive and time losing opration to change 220 laptop's wifi adaptor. 

 

Cisco dealing with this problem but they still haven't addressed the problem correctly. We started to deliver old driver for realtek for all E480 laptops. Still we are not sure. 

 

I want to ask that is there any other permanent solution on meraki site (e.g. changing some adjustment in meraki side)

 

Thanks in advance. 

1 ACCEPTED SOLUTION
MedarV
Here to help

Last week Lenovo released new driver update for E480 and E580. We are starting to test this driver for several laptops. I will write my comments after our test. If you have same problem you can also try this update. Cisco also recommend us to try this version answering our ticket about this problem. 

 

Please share your experience with new driver 2024.0.8.133

 

https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-edge-laptops/thinkpad-e480... 

 

Regards,  

View solution in original post

14 REPLIES 14
cmr
Kind of a big deal
Kind of a big deal

@MedarV what Realtek chipset is it?  On the realtek website the 2023 version seems the latest for most NICs and is from 2017. 

 

As the NICs are WiFi5 standard you can disable the WiFi6 features on the APs from the dashboard, that is pretty much the only thing you can do from the Meraki side for this issue.  It is a simple change so might be worth it even if it is done temporarily while making other changes to the devices.

 

From the client side with the 2024 driver try disabling all power saving options as that worked for older Intel drivers on their WiFi5 NICs, there was a bug in the way the older software worked.

MedarV
Here to help

@cmr , First of all thank you very much for your quick answer. 

 

Our Realtek chipset model is RTL8822BE. 

 

While we were doing test with Cisco Meraki engineers they offer us to disable wifi 6 and they created another SSID just for test and we did same test that you offered. First it seems it is working normally. But several hours later user informed that she has still same problem. 

 

Secondly, We also disabled power safe mode on some test laptops from realtek device manager settings. But it isn't solve the problem. 

 

Thanks. 

 

 

redsector
Head in the Cloud

We had issues too, but with Intel chipsets. But since firmware 28.5 is installed on the MR accesspoints we have no problems any more.

ok. Thank you. We will try with several AP.. I will share the result

JimmyM
Getting noticed

Hi MedarV

 

We experienced the exact same issue 3 years ago when we sold a batch of Thinkpad E480 and E580.

 

I had to use one myself to see what my clients were going through.

 

Meraki, Fortinet, Unifi, personal home AP.... The experience with the Realtek chip on this laptop was horrible.

 

At the time there were several topics on some forum on this subject.

 

After weeks of troubleshooting and pain, we decided to change all customer Wifi Chip on E480 and E580 for Inter 9260 

https://www.amazon.ca/dp/B07NY2SQ5M/ref=cm_sw_em_r_mt_dp_VQ5B5Z710GCN0R4AC2ES?_encoding=UTF8&psc=1

 

Problem solved.

 

See this video for instruction to open the laptop. https://youtu.be/IDkoD0iF-Xs?t=222  

 

 

Now i have a ThinkPad E15 Gen 3 with a RTL8852AE 802.11AX. And it work perfectly.

 

Regards,

Thank You JimmyM. We have also addressed this problem changing E490 chip (Intel) with E480 chip (realtek) After this changing we haven't faced any problem neither E490 nor E480. It is very interesting. Because  realtek worked better with E490. 

 

We have also several E580 and we have also problem with E580 as you told. 

 

We finished driver changing for realtek with older version which is 2023.72.1215.2017. Our E480's have been working with this driver for one week. It seems that this version works better than latest driver in Lenovo support page during Zoom meetings. 

 

Tomorrow we will update MR46's with Beta version 48.5 as Redsector suggested before. We read many article with 28.5. People are saying It is solving such kind of problems even it is Beta version.

 

Regards,   

cmr
Kind of a big deal
Kind of a big deal

@MedarV with Meraki a beta is often just an early release of a stable firmware.  Take the MX 16.14 release that moved from beta to stable release candidate and may well move to stable.

 

We run 28.5 on over 120 APs around our venues and have found it more stable than the 27.x releases.

 

MedarV
Here to help

As I said before we found another solution about this problem. We used older driver for realtek and I guess this driver produced for Asus laptops in 2018 . Driver version is 2023.72.1215.2017. We are using this driver for two weeks. It seems that the problem has been solved with this driver. And we made some changes on windows registry to stop automatic update for this driver. 
  
On the other side we upgraded the MR 46 AP's with firmware 28.5. We are even testing this firmware with official current Lenovo driver for realtek version 2024.0.8.122. Meraki 28.5 firmware seems better. But it is early to say it is solved completely.  

Today We faced new problem with the Realtek driver 2023.72.1215.2017. Wi-fi adaptor suddenly stops the searching SSID and Laptops cannot see any SSID anywhere. we are disabling and enabling the network adaptor with admin account. I am pushing Meraki side to define this problem. Because it seems that it will not solve like this kind of temporary solution. If any of you knows facing problem with Lenovo Realtek wi-fi adaptor and MR46 then please write your problem here. I am communication with Meraki Helpdesk with the problem. 

Its not just lenovo, its all 8822BE/CE drivers.  We use HP and are experiencing the same with Meraki APs (not just MR46, multiple models).  Driver rollback worked (2024.0.10.129 ver. on the 8822CE), but as you said we also are experiencing the WLAN autoconfig service crashing using the driver you mentioned.  I'm going to try 2024.0.8.101 next to see if its old enough to eliminate the meraki bug, but new enough that it isn't crashing the WLAN autoconfig.

TheCongQTM
Comes here often

I have the same problem with 8822CE, I still can't fix it

Rolling back to driver 2024.0.10.129 ver. on the 8822CE chipset has worked for me with no issues (still searching for an 8822BE driver that works and doesn't cause other issues).

MedarV
Here to help

Last week Lenovo released new driver update for E480 and E580. We are starting to test this driver for several laptops. I will write my comments after our test. If you have same problem you can also try this update. Cisco also recommend us to try this version answering our ticket about this problem. 

 

Please share your experience with new driver 2024.0.8.133

 

https://pcsupport.lenovo.com/us/en/products/laptops-and-netbooks/thinkpad-edge-laptops/thinkpad-e480... 

 

Regards,  

View solution in original post

MedarV
Here to help

It seems, this driver has been solved the problem. 

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